20 POINTS -Use the terms in the boxes to fill in the blanks in the following paragraphs.

Atoms, Balanced, Chemical Reaction, Coefficients, Correct, Element, Equation, Formula, Mass, Mg, Numbers, Products, Reactants, Substance, Two, Yields

A ___________________________ is a well defined example of a chemical change. A chemical ___________________________ can be used to show the changes that occur in a chemical reaction. In a chemical reaction, the substance on the left side of the arrow are the starting substance. These substances are called ___________________________. The substances on the right side of the arrow are the substances that result from the reaction. These substances are called ___________________________. The arrow is read as either produces or ___________________________. According to the law of conservation of ___________________________, atoms are neither lost nor gained during a chemical reaction. This law is illustrated when a chemical equation is ___________________. When this is done, there will be the same number of ___________________________ of each kind on both sides of the equation. In a chemical equation, the numbers that are placed in front of the symbols and the formulas are called ___________________________. They are necessary to keep the ___________________________ of atoms in balance. There are several rules for balancing an equation. First, write the correct _________________________ for each reactant and product. Next, choose the coefficients that make the number of atoms of each ___________________________ on each side of the equation equal. The correctly written formula should not be changed. If you change the formula of a substance, the equation is no longer ________________________. Changing a formula will indicate a ___________________________ different than the one intended. To balance the equation Mg + O2 à MgO, first choose coefficients to make the number of atoms of each element on each side of the equation equal. You would need to place a coefficient of ____________________

Answer:

0.600 is yourr answer and if wrong sorry  

Explanation:

0.600 mol of potassium contain \(3.6 * 10^{23}\) atoms of potassium.

C. 0.600 mol

A mole is the amount (10) of material containing  \(6.022*10^{23}\) particles . This number is also called Avogadro's number.

Given:

Atoms of potassium = \(3.3*10^{23} atoms\)

To find:

Moles of potassium =?

As we know,

\(1 mole = 6.022*10^{23} atoms\\\\1 atom = 1 / 6.022*10^{23} mole\\\\3.3*10^{23} atoms = 1 / 6.022*10^{23} mole * 3.3*10^{23} atoms\\\\3.3*10^{23} atoms=0.600 mol\\\\\)

Thus, 0.600 mol of potassium contain  \(3.6 * 10^{23}\) atoms of potassium.

Therefore, option C is correct.

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Answer:

Plugging in the numbers we find the average force to be Favg=18,436 N, which is equivalent to 4124 lbs of force. The impulse delivered by this force is the product of the average force the the contact time, resulting in an impulse of 12.91 Ns.

Answer:

the force multiplied by the time the objects are in contact

Explanation:

took the quiz

Answer:

NO

The mass number of an atom is the total number of protons and neutrons it contains. The mass number of an atom is never smaller than the atomic number.

EXPLANATION:-

The atomic number is always a lesser value than the mass number. The mass number is always a greater value than the atomic number. Atoms are made of electrons, protons, and neutrons. Protons and neutrons together form the nucleus of an atom

Atomic number = number of proton/number of electron

mass number = number of proton + number of Neutron

PLS RATE A BRAINLIEST

There are three base units in the code for one amino acid.

What are the 3 bases that code for an amino acid?

Codons are made up of any triplet combination of the four nitrogenous bases adenine (A), guanine (G), cytosine (C), or uracil (U). Of the 64 possible codon sequences, 61 specify the 20 amino acids that makeup proteins and three are stop signals.

What is the 3 base code?

A three-base sequence in DNA or RNA is known as a codon. The codes in the coding strand of DNA and in messenger RNA aren't, of course, identical, because in RNA the base uracil (U) is used instead of thymine (T).

Why do codons have 3 bases?

The more bases there are per codon the more information you can code for. There are only 22 different amino acids, in consequence, we need a minimum of 3 bases per codon.

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There are mass/mole ratios of elements in compounds in compositional stoichiometry questions and mass/mole ratios of compounds in balanced equations in reaction-based stoichiometry problems.

Composition stoichiometry relates to the atomic structure of a chemical compound, whereas reaction stoichiometry refers to the quantity of compounds consumed or created during a chemical reaction. This is the main distinction between composition and reaction stoichiometry.

Chemically speaking, the term "stoichiometry" refers to the quantitative information about a chemical substance or chemical reaction. When the information pertains to a chemical compound, it is referred to as composition stoichiometry; when it pertains to a chemical reaction, it is referred to as reaction stoichiometry.

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Methane (CH4) is being considered as an alternative automotive fuel to replace gasoline. To determine the volume of 655 g of CH4 at 20°C (293 K) and 750 torr, use Ideal Gas Law: PV=nRT.

First we need to convert the mass of CH4 (655 g) to moles. The molar mass of CH4 is approximately 16 g/mol, so 655 g of CH4 is about 40.94 moles (655/16). Next, we need to convert the pressure from torr to atm. 1 atm = 760 torr, so 750 torr = 0.987 atm (750/760). Now, we can apply the Ideal Gas Law: (0.987 atm)(V) = (40.94 moles)(0.0821 L atm/mol K)(293 K). Solving for V, we get V ≈ 1046 L. Therefore, 655 g of methane at 20°C and 750 torr occupies a volume of approximately 1046 liters.

According to the Ideal Gas Law, when gases are at the same temperature, pressure, and volume (but not mass), they all have the same number of molecules. Keep in mind that the Ideal Gas rule does not apply when the temperature and pressure are just below the point at which a substance will become a liquid or solid. The combined gas law is made up of the three previously recognised laws:

Boyle's law PV = K,

Charles's law V/T = K,

Gay-law Lussac's P/T = K.

The combined ideal gas law's equation is therefore PV/T = K, where P is pressure, T is temperature, V is volume, and K is a constant.

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Old volume = 200  cm3.

Pressure = 18 degree

New volume= ?

P1V1/ T1 = P2V2/ T2

200 * 18/ 285 = 18 * V2/ 285. New volume will be 1.86 L.

The space occupied within an object's borders in three dimensions is referred to as its volume. It is sometimes referred to as the object's capacity.

Finding an object's volume can help us calculate the quantity needed to fill it, such as the volume of water needed to fill a bottle, aquarium, or water tank.

Thus, New volume will be 1.86 L.

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Answer:

because the ions arent firmly held in place!

Explanation:

Answer: B

Explanation:

The tendency of an atom to attract a pair of electrons that will bond is known as electronegativity. Electronegativity is a measure of the ability of an atom to attract electrons towards itself when it is bonded to another atom.

The higher the electronegativity of an atom, the more strongly it attracts electrons towards itself. This property is important in determining the polarity of a chemical bond, and plays a crucial role in many chemical reactions. Property of an atom that measures its ability to attract electrons in a chemical bond is called electronegativity.

So, the tendency of an atom to attract a pair of electrons that will bond is known as electronegativity.

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Given data:H2O vapor content: 13 gramsH2O vapor capacity: 52 grams at 25 degrees Celsius 13 grams at 10∘C52 grams at 30∘CFormula used to find the dew point:$$\dfrac{13}{52}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$\frac{1}{4}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$

Where A is the constantDew Point:It is the temperature at which air becomes saturated with water vapor when the temperature drops to a point where dew, frost or ice forms. To solve this question, substitute the given data into the formula.$$13/52=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$13(17.27-A)=3\pi A(ln100)$$By simplifying the above expression, we get$$A^2-17.27A+64.78=0$$Using the quadratic formula, we get$$A=9.9,7.4$$

The dew point is 7.4 since it is less than 10°C.More than 100:The term "More than 100" has not been used in the question provided.

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Answer:

Aluminum

Explanation:

Each chlorine atom needs one more valence electron to have a full valence electron shell, so X needs to have 3 valuence electrons. The only that satisfies this is aluminum.

A mixture of He Ne and N2 gases has a pressure of 1. 943 atm if the pressure of He and Ne are 0. 137 atm and 0. 566 atm respectively.  The partial pressure of N2 in the mixture is 1.240 atm.

To find the partial pressure of N2 in the mixture of He, Ne, and N2 gases having a pressure of 1.943 atm with the pressure of He being 0.137 atm and that of Ne being 0.566 atm, we must first calculate the pressure of N2.

Let's assume the pressure of N2 in the mixture is Pn2.

Since the total pressure is equal to the sum of partial pressures of gases, we can write:

Ptotal = PHe + PNe + PN2 (equation 1)

We have the values for Ptotal, PHe, and PNe from the problem, which are 1.943 atm, 0.137 atm, and 0.566 atm respectively.

Substituting the values of Ptotal, PHe, and PNe in equation 1, we get:

Pn2 = Ptotal - PHe - PNe

Pn2 = 1.943 atm - 0.137 atm - 0.566 atm

Pn2 = 1.240 atm

Therefore, the partial pressure of N2 in the mixture is 1.240 atm.

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The correct statement about functional groups is:

(b) Most functional groups are polar and reactive, giving particular chemical properties to the molecules to which they are attached.

Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions and properties of those molecules. They play a crucial role in biomolecules and other organic compounds.

Statement (a) is partially correct as amino groups (-NH₂), carboxyl groups (-COOH), and hydroxyl groups (-OH) are indeed important functional groups in biomolecules.

However, it does not encompass the full range of functional groups found in biomolecules.

Statement (c) is not true. Polymers typically have repeating units based on a non-polar carbon core, and the presence of polar functional groups does not necessarily make the polymer soluble in water. Solubility in water depends on various factors, including the nature and number of polar functional groups and the overall structure of the polymer.

Statement (b) is the correct choice as most functional groups exhibit polarity and reactivity, leading to distinct chemical properties in the molecules they are part of. This polarity and reactivity allow functional groups to participate in various chemical reactions and interactions, influencing the behavior and properties of organic compounds.

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Answer:

Would be C

Explanation:

helpig and bringing noice to a persons safety is always the right thing. C is correct, hope this helps

The length of the object below with accuracy and to the correct degree of precision is 12.5 cm. So, the correct answer is B).

The scale shows a reading that falls between the mark of 12 cm and its adjacent division. As each unit on the scale is equal to 1 mm, the length between two sub units is equal to 0.5 mm.

Therefore, since the scale reading falls somewhere between 1 mm unit of length, it can be taken as half of it, which is 0.05 mm. Thus, the total length of the object is 12.5 cm or 12.05 mm.

This calculation demonstrates the importance of precision in measurements and the need to take into account the scale's increments to ensure accurate results. So, the correct option is B).

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--The given question is incomplete, the complete question is given

" Determine the length of the object below with accuracy and to the correct degree of precision.

Use this media to help you complete the question.

12.48 cm

12.5 cm

12.10 cm

12 cm "--

An aqueous solution of bismuth nitrate (bi(no3)3) was electrolyzed until 35 grammes of metallic bismuth was plated out at the cathode, requiring 0.5023 faradays of power to have travelled through the cell.

Moles of Bi are equal to mass/molar mass, which is 35/209 = 0.167 mol.

Electrons per mole of bivalent ion = 3 * 0.167 = 0.5023 mol

1 mol of electrons has a charge of 1 F.

Charge equals 0.5023 moles per f.

The faraday is a dimensionless measure of the amount of electric charge, or roughly 6.02 x 1023 electric charge carriers. This is also referred to as Avogadro's constant and is equivalent to one mole for aqueous solution.

The coulomb (C) is the most popular unit for measuring the amount of electric charge in the International System of Units (SI). It is about similar to 6.24 × 1018 electric charge carriers and equal to one ampere-second (1 A s).

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Answer:

the first cause eye color is genetic

Answer:

B

Explanation:

because HCl donates a proton to water. Therefore, HCl is an acid. H2O accepts a proton from HCl. Therefore, H2O is a base.

Answer:3.04

Explanation:Found answer online take my word for it.

♥answer♥

Physical

♥explanation♥

Physical changes alter only the size, shape, form or matter state of a material. Water boiling, melting ice, tearing paper, freezing water and crushing a can are all examples of physical changes.

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By using pH formula, the concentration of hydroxyl ion [OH-] will be 5.3 ×\(10^{-4}\) M.

What is pH?

The pH scale is a measurement of hydrogen ion concentration that is used to determine the acidity as well as alkalinity of a solution.

Calculation of [OH-] by using formula of pH.

Given data:

[H+] = 1.87 x \(10^{-11} M\)

[OH-] = ?

Calculation of [OH-] is shown below:

It can be calculated by using the formula:

pH = -log [H+]

Put the value of concentration of hydrogen ion [H+]  in above formula.

pH = -log (1.87 x \(10^{-11} M\))

pH = -log (1.87) -log ( \(10^{-11} M\))

pH = -0.27 +11

pH = 10.73

Now, use the formula, pH +pOH = 14

pOH = 14 - pH

pOH = 14 - 10.73

pOH = 3.27

Now, use formula pOH = -log [OH-]

[OH-] = \(10^{-pOH}\)

[OH-] = \(10^{-3.27}\)

[OH-] = 5.3 ×\(10^{-4}\) M

Therefore, the concentration of hydroxyl ion [OH-] will be 5.3 ×\(10^{-4}\) M.

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Answer:

By making sense of the World around them

Explanation:

maybe?

A student wants to make magnesium chloride, MgCl₂. The student adds magnesium carbonate to hydrochloric acid, HCI.

MgCl₂ = 1 x Mg + 2 x Cl = 24.31 + 2 x 35.45 = 95.21 g/mol

To find the mass of MgCO₃ that reacts to form 0.0200 mol of MgCl₂, we first need to use the balanced equation to determine the mole ratio of MgCO₃ to MgCl₂:

1 mol MgCO₃ : 1 mol MgCl₂

So, 0.0200 mol MgCl₂ will react with 0.0200 mol MgCO₃.

The molar mass of MgCO₃ is:

MgCO₃ = 1 x Mg + 1 x C + 3 x O = 24.31 + 12.01 + 3 x 16.00 = 84.31 g/mol

mass = moles x molar mass = 0.0200 mol x 84.31 g/mol = 1.69 g

To find the mass of HCl that reacts, we can use the stoichiometry again:

1 mol MgCO₃ : 2 mol HCl

So, 0.0200 mol MgCl₂ will react with 0.0400 mol HCl.

The molar mass of HCl is:

HCl = 1 x H + 1 x Cl = 1.01 + 35.45 = 36.46 g/mol

The mass of HCl required is:

mass = moles x molar mass = 0.0400 mol x 36.46 g/mol = 1.46 g

Therefore, the masses of MgCO₃ and HCl that react to form 0.0200 mol of MgCl₂ are 1.69 g and 1.46 g, respectively.

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Answer: %C = 63.5%, %H = 6.00%, %N = 9.3%, %O = 21.2%

Percent composition is quite straightforward. You can determine by mass how much of each element is contained in a compound using its percent composition. A chemical compound is created when two or more components are combined. % composition of acetaminophen is %C = 63.5%, %H = 6.00%, %N = 9.3%, %O = 21.2%.

The percentage composition of a compound is defined as the mass of each element divided by the total mass of the compound multiplied by 100%. Therefore, a compound's percentage composition lets you know what proportion of its mass is made up of each element.

The total mass of acetaminophen = 151.16 g

%composition is:

Mass of element / total mass of compound × 100

%C: 12 × / 151.16 × 100 = 63.5%

%H: 1 × 9 /  151.16 × 100 = 6.00%

%N: 14  /  151.16 × 100 = 9.3%

%O: 16 × 2 / 151.16 × 100 = 21.2%

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There are 1.2 moles of KBr found in 3 Liters of 0.4 M solution.

The number of moles of a substance can be calculated by multiplying the molarity by the volume.

No. of moles = Molarity × volume

According to this question, 3L of a KBr solution are contained in a 0.4M.

no. of moles = 3L × 0.4M = 1.2moles

Therefore, there are 1.2 moles of KBr found in 3 Liters of 0.4 M solution.

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The intermolecular forces that include dipole-dipole forces are found in the CH2F2 (l) liquid. Intermolecular forces are forces between the molecules that hold them together.

These forces are weaker than the intramolecular forces, which are forces within the molecules that hold them together. There are three types of intermolecular forces Dipole-dipole forces, London dispersion forces, and hydrogen bonds. These forces are based on different properties of molecules, and they play a vital role in the physical properties of matter.

Dipole-dipole forces are the forces between polar molecules that have a permanent dipole moment. These forces occur because the positive end of one molecule is attracted to the negative end of another molecule. The strength of the dipole-dipole force depends on the polarity of the molecule and the distance between the molecules.

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