Compared with a complex atom like neon, a simple atom such as hydrogen has.
Answers
Compared with a complex atom like neon, a simple atom such as hydrogen has fewer electrons and a smaller number of protons, neutrons, and electrons. The number of protons, neutrons, and electrons determines an atom's physical properties, including its size, charge, and behavior.
In comparison to complex atoms like neon, simple atoms like hydrogen have fewer electrons and a smaller number of protons, neutrons, and electrons. The electrons revolve around the nucleus of the atom in a shell, which is determined by the number of protons, neutrons, and electrons. Hydrogen, on the other hand, only has one electron, one proton, and no neutrons, while neon has ten electrons, ten protons, and ten neutrons. As a result, hydrogen is much less massive than neon and has a much smaller size, while neon is much heavier and larger. Atoms are the basic building blocks of all matter, and they are made up of protons, neutrons, and electrons. The number of protons, neutrons, and electrons determines an atom's physical properties, including its size, charge, and behavior. A simple atom like hydrogen has fewer electrons and a smaller number of protons, neutrons, and electrons compared to a complex atom like neon.
Hydrogen, for example, has one electron, one proton, and no neutrons, while neon has ten electrons, ten protons, and ten neutrons. Hydrogen is much less massive than neon and has a much smaller size as a result. Hydrogen has only one electron in its outer shell, while neon has eight electrons in its outer shell. As a result, neon is chemically inactive and does not engage in chemical reactions, while hydrogen is highly reactive and engages in chemical reactions with a variety of substances. In comparison to complex atoms like neon, simple atoms like hydrogen have fewer electrons and a smaller number of protons, neutrons, and electrons. As a result, they are less massive and have smaller sizes. Hydrogen is the most abundant element in the universe, and it is commonly found in molecules like water and methane. It is also used in the synthesis of various chemicals and is a vital element in the production of ammonia.
In conclusion, we can state that hydrogen is a much simpler atom than neon, with a significantly smaller number of protons, neutrons, and electrons, as well as fewer electrons in the outer shell. Neon, on the other hand, is a complex atom with a considerably larger number of protons, neutrons, and electrons, as well as a greater number of electrons in the outer shell.
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Related Questions
please answer this fast
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What is the test for CO2?
One common test for carbon dioxide (CO2) is the limewater test. Here's how it works:
Add a small amount of limewater (a solution of calcium hydroxide in water) to a clear container.
Blow into the container, creating bubbles in the limewater.
Observe the limewater. If carbon dioxide is present, it will react with the calcium hydroxide to form calcium carbonate, which will make the limewater turn cloudy or milky.
This test is often used to detect the presence of carbon dioxide in the breath of a person, as well as in various chemical reactions where carbon dioxide may be produced or consumed.
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match the substance with its chemical formula. 1. h hydrogen ion 2. h 3o hydroxide ion 3. oh - hydronium ion
Answers
When it comes to chemical formulas, the chemical formula is used to show the elements that make up a compound. For instance, water has the chemical formula H2O, which shows that it is made up of two hydrogen atoms and one oxygen atom.
Hydrogen ion (H+) has the chemical formula H+
Hydroxide ion (OH-) has the chemical formula OH-
Hydronium ion (H3O+) has the chemical formula H3O+.
The chemical formulas of hydrogen ion, hydroxide ion, and hydronium ion are:
H+ for hydrogen ion OH- for hydroxide ionH3O+ for hydronium ion.
An ion is an atom or a molecule that has gained or lost electrons. These atoms or molecules become charged ions due to their gain or loss of electrons. Hydrogen ion, hydroxide ion, and hydronium ion are three of the most common ions in aqueous solution that have a significant impact on chemical reactions. The hydrogen ion, which has a positive charge, is an essential component of many chemical reactions, particularly those that take place in water. It is represented by the chemical symbol H+. The hydroxide ion, which has a negative charge, is also a crucial component of many chemical reactions, particularly those that take place in water. It is represented by the chemical symbol OH-.The hydronium ion, which has a positive charge, is another important component of many chemical reactions, particularly those that take place in aqueous solutions. It is represented by the chemical symbol H3O+.
In summary, hydrogen ion, hydroxide ion, and hydronium ion are important components of many chemical reactions. They have different chemical formulas, with hydrogen ion being represented by H+, hydroxide ion by OH-, and hydronium ion by H3O+.
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What is the specific heat of an unknown substance if a 3.50 gram sample releases 50.21 joules of energy
as its temperature changes from 25°C to 20°C?
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The amount of heat per unit mass needed to raise the temperature by one degree Celsius is known as the specific heat.
Thus, The formula below, where c is the specific heat, is typically used to explain the relationship between heat and temperature change. If a phase shift occurs, the relationship is invalid because the temperature is unaffected by the heat added or lost during a phase transition.
Water has the highest specific heat of any common substance at 1 calorie/gram °C = 4.186 joule/gram °C. Water thus plays a crucial part in controlling temperature.
Water has a far higher specific heat per gram than a metal does. Most of the time, comparing the molar specific temperatures of different substances makes more sense.
Thus, The amount of heat per unit mass needed to raise the temperature by one degree Celsius is known as the specific heat.
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Dan and Dawn want to know if there is any difference between the
mileage expected from bicycle tires from two different manufacturers. Dan
will put one brand on his bike and Dawn will put the other brand on her bike.
Which of the following variables would be the MOST important to control in
this experiment?
Answers
The most important variable to control in this experiment the type of bicycle tyre.
What is an experiment?An experiment is a test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy of something previously untried.
According to this question, Dan and Dawn wants to know if there is any difference between the mileage expected from bicycle tires from two different manufacturers.
Dan, then, conduct an experiment by putting one brand on his bike and Dawn will put the other brand on her bike.
In this experiment, the independent variable is the different mileage from different manufacturers. This means that to make this experiment a controlled one, all other variables must be kept constant.
Therefore, the most important variable to control in this experiment the type of bicycle tyre because Dan and Dawn must ensure that they use the same type of bicycle tyre.
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Indicate whether the O2- is a cation or anion and the correct electron configuration for that ion.
A) Cation, 1s22s22p6
B) Anion, 1s22s22p3
C) Anion, 1s22s22p6
D) Cation, 1s22s22p4
Answers
Answer: C
Explanation: Based on the periodic table, O is atomic number 8, which means it has 8 electrons. The first few atomic orbitals are 1s, 2s, and 2p.Each orbital can hold 2 electrons maximum, and there are 2l+1 of each type of orbital (s,p,d,f,g,...), where l=0 corresponds to an s orbital, l=1 means porbital, and so on. So, the configuration for neutral O atom is: 1s22s22p4. When oxygen gains two electrons, it acquires a charge of 2−. Therefore, the twoelectrons, which go into the highest-energy atomic orbitals, give you a new configuration of1s22s22p6for O2−, which is the same electron configuration as Ne. That is known as a noble-gas-like configuration, and in general it is stable if oxygen is like that in a compound (having 8 electrons in its 2s and 2p orbitals combined).
Question 14 PM2.5 is defined as ________
- the mass concentration of particles in the air less than or equal to 2.5 micrometers in diameter. - the mass concentration of particles in the air equal to 2.5 micrometers in diameter. - the mass concentration of particles in the air greater than or equal to 2.5 micrometers in diameter. Question 15 Carbon dioxide (CO2) is a criteria air pollutant. - True - False Question 16 Roughly percent of emissions of carbon monoxide in Santa Clara County come from mobile sources (select the choice closest to the correct answer). - 50 - 75 - 25 Question 17
The term "photochemical smog" is most synonymous with which of the following criteria air pollutants? - lead (Pb) - carbon monoxide (CO) - sulfur dioxide ( SO2) - ozone (O3) Question 18 "Attainment" of ambient air quality standards requires that measured concentrations at all monitoring stations within an air district are below ambient air standards. - True - False
Answers
: PM2.5 is defined as the mass concentration of particles in the air less than or equal to 2.5 micrometers in diameter.Question 15: False, carbon dioxide (CO2) is not considered a criteria air pollutant.
Question 16: The closest answer is 50%, but the exact percentage is not provided in the question.Question 17: The term "photochemical smog" is most synonymous with ozone (O3), which is a criteria air pollutant.Question 18: True, attainment of ambient air quality standards requires that measured concentrations at all monitoring stations within an air district are below ambient air standards.
Question 14 asks about the definition of PM2.5. PM2.5 refers to particulate matter with a diameter less than or equal to 2.5 micrometers. It represents the mass concentration of particles suspended in the air, which are small enough to be inhaled into the respiratory system and can have adverse health effects.
Question 15 states whether carbon dioxide (CO2) is a criteria air pollutant. Criteria air pollutants are a set of pollutants regulated by environmental agencies due to their detrimental impact on air quality and human health. However, carbon dioxide is not considered a criteria air pollutant because it does not directly cause harm to human health or the environment in the same way as pollutants like ozone or particulate matter.
Question 16 asks about the percentage of carbon monoxide (CO) emissions from mobile sources in Santa Clara County. While the exact percentage is not provided in the question, the closest answer option is 50%. However, it is important to note that the precise percentage may vary depending on specific local conditions and emissions sources.
Question 17 inquires about the criteria air pollutant most synonymous with the term "photochemical smog." Photochemical smog is primarily associated with high levels of ground-level ozone (O3). Ozone is formed when nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in the presence of sunlight, creating a hazy and polluted atmospheric condition.
Question 18 addresses the concept of "attainment" of ambient air quality standards. To achieve attainment, measured concentrations of pollutants at all monitoring stations within an air district must be below the established ambient air quality standards. This ensures that the air quality in the given area meets the required standards for protecting human health and the environment.
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- explain how you manipulate the bits of b to do both add and subtract.
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By utilizing two's complement representation, we can manipulate the bits of a binary number 'b' to perform both addition and subtraction operations.
To manipulate the bits of a binary number 'b' to perform both addition and subtraction, we can make use of the concept of two's complement.
In two's complement representation, to perform addition, we simply add the numbers as usual. However, for subtraction, we take the two's complement of the number to be subtracted and then perform addition using the two's complement representation.
This effectively converts subtraction into addition, allowing us to use the same operations for both. By manipulating the bits and applying appropriate addition or subtraction rules using two's complement, we can achieve the desired arithmetic operations on binary numbers.
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A spectrophotometric method for the analysis of iron has a linear calibration curve for standards of 0. 00, 5. 00, 10. 00, 15. 00, and 20. 00 ppm. An iron ore sample with an expected iron content of 40–60% w/w is to be analyzed by this method. An approximately 0. 5 g sample is taken, dissolved in a minimum of concentrated HCl, and diluted to 1 L in a volumetric flask using distilled water. A 5. 00-mL aliquot is removed with a pipet. To what volume (10, 25, 50, 100, 250, 500, or 1000 mL) should it be diluted to minimize the uncertainty in the analysis? Explain
Answers
To calculate the concentration of the iron sample by using a spectrophotometric method, it is necessary to dilute the sample. The volume to which the sample should be diluted is a crucial question in achieving the most accurate result.
The process involves diluting the sample, and the concentration must be calculated to determine the precise result of the dilution. This question can be answered by calculating the uncertainty and identifying the value of the uncertainty. The value with the lowest uncertainty will be the best value to choose. The volume with the lowest uncertainty will be the ideal volume to dilute the 5 ml aliquot of the iron sample to achieve a result with the minimum level of uncertainty.
To determine the optimal volume for dilution, the uncertainty should be calculated.
This can be done by using the equation for propagation of uncertainty, which states that the uncertainty of the result is equal to the square root of the sum of the squares of the uncertainties of the individual components. When calculating the uncertainty of the diluted sample, the uncertainty of the initial sample and the uncertainty of the diluent must be considered. The uncertainty of the initial sample can be calculated using the calibration curve. As the expected iron content is 40-60%, the concentration of the sample is expected to be 8-12 ppm. The uncertainty of the calibration curve is given by the standard deviation of the calibration standards.
The diluent has a negligible uncertainty. The uncertainty of the diluted sample will be lower if a larger volume is used for dilution because the relative contribution of the uncertainty of the initial sample will decrease. However, the uncertainty of the measurement will increase if the sample is diluted too much because the concentration of the analyte will be too low to be detected accurately. A 100 mL volume is a good choice because it balances the need for sufficient dilution to reduce the uncertainty of the initial sample with the need for sufficient concentration to allow for accurate detection of the analyte.
The volume of the sample that should be diluted is 5 ml. The minimum level of uncertainty is obtained at a dilution of 100 ml. When the volume of the diluent is greater than 100 ml, the uncertainty of the measurement increases, and when the volume of the diluent is less than 100 ml, the uncertainty of the measurement also increases. Thus, a 100 ml volume of diluent is the ideal volume to minimize the uncertainty in the analysis of iron.
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What point does the ammonium ions act as a buffer solution? Please this is driving me insane.
Answers
Answer:
Explanation:The buffer is a mixture of ammonia (NH3) and ammonium (NH4+). ... Since ammonia (NH3) is a weak base, it will have a pH above 7 and since ammonium (NH4+) is a weak acid, it will have a pH below 7. Ammonia (NH3) is a weak base and ammonium (NH4+) is a weak acid. Ammonia (NH3) is the conjugate base of ammonium (NH4+).
PLZ HELP what is a sign that a chemical change has happened
Answers
Answer:
Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change.
Potassium metal reacts with chlorine gas to form solid potassium chloride. Answer the following:
Write a balanced chemical equation (include states of matter)
Classify the type of reaction as combination, decomposition, single replacement, double replacement, or combustion
If you initially started with 78 g of potassium and 71 grams of chlorine then determine the mass of potassium chloride produced.
Answers
The balanced chemical equation between pottasium and chlorine is as follows: 2K + Cl₂ → 2KCl. It is a combination reaction.
What is a chemical reaction?A chemical reaction is a process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.
According to this question, a chemical reaction occurs between potassium metal and chlorine gas to form pottasium chloride as follows:
2K + Cl₂ → 2KCl
The chemical reaction is a combination reaction because it involves the combination of two elements to form a compound.
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Riviera is a 20-year-old who has a very low credit score. She asks her friend Li for advice on how she can increase her credit score. What is the BEST advice Li should give Riviera? She should invest her savings in stocks. She should drive an expensive car. She should pay her bills on time.
Answers
The BEST advice that Li may give Riviera is 'she should pay her bills on time'. It is a good practice to maintain finances in good order.
Personal finance refers to how a person manages his/her money as well as saving and investing.
Paying bills on time is a fundamental issue for taking control of your money and thus controlling your financial life.
Some key tips to maintain finances in order include:
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Two rocks one weighing 100m and the other weiging 200n are drpped from a 50-m cliff at the same time when both rocks are 10m from the ground and air friction is ignored which is the same
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Answer:
Ignore all friction
Radars can help meteorologists detect clouds and sailors detect submarines. Radars send out radio waves and record their echoes after the radio waves reflect off an object. Two radars send out radio waves
with the same frequency. The first radar sends radio waves through the air. The second radar sends radio waves through the ocean. What is true about these radio waves?
Answers
Answer:
D
Explanation:
Same Wavelength. Also cause i did the test
Answer:
They have the same wavelenght
Explanation:
A substance with a *pH of 13* tells you that the substance is mildly basic or strongly basic?
Answers
Answer:
Strongly basic
Explanation:
pH is a measure of the acidity or basicity of a solution, with values ranging from 0 to 14. A pH of 7 is considered neutral, values below 7 indicate acidity, and values above 7 indicate basicity. As pH increases beyond 7, the basicity of the substance becomes stronger.
Use this pH Scale to further aid you in your studies of Acid Base Chem :)
Pyruvate gets oxidized into ___, creating ___ as a byproduct, in one of the first steps of the citric acid cycle
Answers
Pyruvate gets oxidized into Acetyl CoA, creating CO2 as a byproduct, in one of the first steps of the citric acid cycle.
The citric acid cycle, also known as the Krebs cycle or the tricarboxylic acid (TCA) cycle, is a series of chemical reactions that generate energy through the oxidation of acetyl CoA derived from carbohydrates, fats, and proteins. The process begins with the conversion of pyruvate, a three-carbon compound, into Acetyl CoA, a two-carbon molecule, in a step called pyruvate decarboxylation. During this conversion, a molecule of CO2 is released as a byproduct. The newly formed Acetyl CoA then enters the citric acid cycle, where it combines with oxaloacetate to form citrate.
The cycle proceeds through a series of chemical reactions, generating energy in the form of ATP and reducing equivalents (NADH and FADH2) that are used in the electron transport chain to produce more ATP. Throughout the cycle, CO2 is also released as a waste product, the citric acid cycle plays a crucial role in cellular respiration, allowing cells to generate the energy necessary for their metabolic processes. In summary, Pyruvate gets oxidized into Acetyl CoA, creating CO2 as a byproduct, in one of the first steps of the citric acid cycle.
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PLEASE HELP ME RIGHT ANSWERS ONLY!!!!!!! 40 POINTS :)
What does the result table indicate about the solute in this solution
Answers
The result table indicate that A. The solute is a SOLID because it has a DECREASE in the amount dissolved as temperature decreases.
What is describes solubility?The solubility of a solid solute in a liquid solvent generally decreases as the temperature decreases. This is because the kinetic energy of the solute molecules decreases as the temperature decreases. As the kinetic energy of the solute molecules decreases, they are less likely to have enough energy to escape from the solution and enter the gas phase.
In the table, as the temperature decreases, the concentration of the solute in the solution decreases. This indicates that the solute is a solid and that the solubility of the solute decreases as the temperature decreases.
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a balloon which contains 5.22 moles of helium, how many grams of helium is present in the balloon? *
Answers
5.22 moles of helium have a mass of 20.9 g.
What is the molar mass?The molar mass is the sum of the total mass in grams of all the atoms that make up a mole of a particular molecule.
We have 5.22 moles of helium and we want to convert it to grams. We will use the following expression.
m = n × M
m = 5.22 mol × 4.00 g/mol = 20.9 g
where,
m is the mass.n is the number of moles.M is the molar mass.5.22 moles of helium have a mass of 20.9 g.
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which types of fossil fuels emit the highest amounts of co2 per unit of energy produced? which types produce the least? geol 1305
Answers
Compared to burning natural gas or petroleum, coal combustion produces more carbon dioxide.
Natural gas produce the least CO2.
The primary source of most emissions of greenhouse gases (GHG) that are created by humans is the burning of fossil fuels like coal, natural gas, and petroleum for energy.
The basic components of fossil fuels are carbon and hydrogen. When fossil fuels are burned, oxygen reacts with both carbon and hydrogen to create CO2 and water (H2O). Coal emits the highest amount of CO2.
We use the heat produced by these reactions as energy. The fuel's carbon content determines how much CO2 is generated (emitted), while the fuel's hydrogen and carbon contents determine how much heat is generated.
Natural gas combustion creates less CO2 than burning other fossil fuels because natural gas, which is primarily composed of CH4, has a high hydrogen concentration.
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GIVE REASON : Aluminum foils are used to wrap food items. PLEASE GIVE THE ANSWER FAST.
Answers
What should a simplified model of a large molecule like glucose show?
Answers
Glucose is the simplest sugar and carbohydrate that provides energy. The simplified model of glucose (C₆H₁₂O₆) shows carbon, hydrogen, and oxygen atoms linked together.
What is glucose?Glucose is an example of a carbohydrate macromolecule that is further classified as a monosaccharide. They are crystalline and fundamental units of carbohydrates.
The molecular formula of glucose is C₆H₁₂O₆ and the mass is 180.156 g/mol. It is an aldohexose that contains an aldehydic functional group. In its structure, there are six oxygen atoms, six carbon atoms, and twelve hydrogen atoms.
Therefore, the glucose molecule is composed of C, H, and O.
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which of the following were included in dalton's atomic theory? atoms can be subdivided, created, or destroyed. atoms of different elements can combine in simple whole-number ratios. in chemical reactions, atoms are combined, separated, or rearranged.
Answers
The true statement is: Dalton’s theory recognized that all matter is composed of atoms.
1. The first comprehensive attempt to characterise all matter in terms of atoms and their properties was Dalton's atomic theory.
2. The laws of conservation of mass and constant composition served as the foundation for Dalton's theory.
3. In the first section of his thesis, he claims that all matter is composed of indivisible atoms.
According to the second component of the theory, the mass and characteristics of every atom in a specific element are the same.
Compounds, according to the third section, are combinations of two or more different kinds of atoms.
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Chemistry students were testing compounds in an aqueous solution to see which one had the strongest electrical current. There are three beakers each with a different compound. The first beaker and the second beaker lit the light bulbs brightly. The third beaker did not light up the bulb. With the information that is provided, what is the best explanation for the first and second beaker being the strongest electrolytes?
A)The first and second beakers contain a solution that partially dissociates the ions. These ions create an electrical current. The third beaker solution completely dissociates the ions. It is a strong electrolyte.
B)The first and second beakers contain a solution that completely dissociates the ions. These ions create an electrical current. The third beaker solution does not dissociate ions. It is a nonelectrolyte.
C)The first and second beakers contain a solution that does not dissociate ions. These ions create an electrical current. The third beaker solution completely dissociates the ions. It is a strong electrolyte.
D)The first and second beakers contain a solution that completely dissociates the ions. These ions do not create an electrical current. The third beaker solution does completely dissociates the ions. It is a strong electrolyte.
Answers
Answer:
B)The first and second beakers contain a solution that completely dissociates the ions. These ions create an electrical current. The third beaker solution does not dissociate ions. It is a nonelectrolyte.
Explanation:
Electrolytes dissociate ions. They are also conductors. Since the first 2 bulbs light up strongly, we can assume that the ions completely dissociated. Since the 3rd did not light up, it is a nonelectrolyte.
Answer:
The first and second beakers contain a solution that completely dissociates the ions. These ions create an electrical current. The third beaker solution does not dissociate ions. It is a nonelectrolyte.
Explanation:
Deionized water (water with no lons in it) does not conduct electricity, but salt water (with in it) does conduct electricityExplain why
Answers
Deionized water does not conduct electricity because it contains no free ions or charges to carry the electrical current.
In contrast, saltwater contains dissolved ions, such as sodium (Na+) and chloride (Cl-) ions, which are free to move and carry electrical charges. When an electric field is applied across saltwater, the ions move towards opposite electrodes and carry the electrical current, allowing the saltwater to conduct electricity.
This is why saltwater is often used as an electrolyte in batteries and other electrical devices.
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which substanxw has the stringesr imf warwe propane thanol ethanoic axid
Answers
The substance that has the strongest intermolecular force is Ethanoic Acid.
Intermolecular forces are the attractive forces that exist between molecules. They differ in strength and determine many of the physical properties of a substance, such as boiling point, melting point, and vapor pressure. Propane has only van der Waals forces, which are weak intermolecular forces. The strength of the intermolecular forces in ethanol is weaker than that in ethanoic acid.
The strongest intermolecular forces in the liquid state are hydrogen bonds, followed by dipole-dipole interactions. The strongest intermolecular force in ethanol is hydrogen bonding, while in ethanoic acid, it is hydrogen bonding as well. Thus, Ethanoic Acid has the strongest intermolecular force.
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sodium react gently with water ture or false
Answers
false,
sodium has a vigorous reaction with water.
This can be observed by putting a piece of sodium in water,
it moves swiftly across the surface of water and reacts violently.
how many moles of tin are in 2.01 x 10^23 atoms of tin?
Answers
Using Avogadro’s number, 0.33 moles of tin are present.
The number of particles (atoms or molecules) in each mole of a material is known as the Avogadro’s number. It's represented with a symbol \(N_A\).
Avogadro's number of molecules of that substance make up one mole of an atom, according to the mole concept.
1 mole = 6.02 x \(10^2^3\) atoms
Given:
No. of atoms of tin = 2.01 x \(10^2^3\)
Avogadro’s number, \(N_A\)= 6.02 x \(10^2^3\)
To find:
No. of moles, n = ?
Formula:
n = No. of atoms of tin / Avogadro’s number
Calculations:
n = 2.01 x \(10^2^3\) / 6.02 x \(10^2^3\)
n = 2.01 / 6.02
n = 0.33 moles
Result:
The number of moles present in 2.01 x \(10^2^3\) atoms of tin is 0.33 moles
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EZ POINTS!!
Which of the following is not a mixture? lemonade fruit salad pure water cereal and milk
Answers
Answer:
pure water that's easy hope that helps
in an ionic or covalent substance, electrons are shared or transferred between no more than two atoms at a time. however, in a metallic substance, electrons are shared among all of the metal atoms in the sample. how does this explain why metals are more malleable and ductile than ionic and covalent compounds?
Answers
Since the electrons in metals are shared across all of the metal atoms in the sample as "sea of electrons" which surrounds the metal ions, making metals more malleable and ductile than ionic and covalent substance.
A metallic composition of all metal atoms surrounds the metal ions with a "sea" of shared electrons. It is assumed that this electron sea is the source of the great conductivity, malleability, and ductility that make metals unique.
Metal ions can easily pass by one another and twist the metal without breaking it because of the electron sea in a metallic body. On the other hand, it is more challenging to modify ionic and covalent molecules without rupturing the bonds due to the strong chemical bonds that hold them together. Because of this, ionic and covalent compounds are less ductile and malleable than metals.
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you need to make an aqueous solution of 0.172 m iron(ii) nitrate for an experiment in lab, using a 250 ml volumetric flask. how much solid iron(ii) nitrate should you add?
Answers
We need to add 7.7 g of solid iron(II) nitrate to make a 0.172 M solution in 250 mL volumetric flask.
First, we can use molarity and volume of solution to find the number of moles of iron(II) nitrate needed:
moles of \(Fe(NO_3)_2\)= Molarity × Volume in liters
moles of \(Fe(NO_3)_2\) = 0.172 mol/L × 0.250 L = 0.043 mol
Next, we can use the molar mass of iron(II) nitrate to find the mass of the solid that needs to be added:
mass of \(Fe(NO_3)_2\) = moles of \(Fe(NO_3)_2\) × molar mass of \(Fe(NO_3)_2\)
mass of \(Fe(NO_3)_2\)= 0.043 mol × (55.85 g/mol + 2 × 14.01 g/mol + 6 × 16.00 g/mol)
mass of \(Fe(NO_3)_2\)= 0.043 mol × 179.86 g/mol = 7.7 g
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