The given statement " NaOH, KOH, RbOH are all strong electrolytes" is true.
An electrolyte is a substance that, when dissolved in water or melted, forms ions and allows the flow of electric current. Strong electrolytes are substances that completely dissociate into ions when dissolved in water.
NaOH, KOH, and RbOH are all hydroxides of alkali metals and alkali earth metals. These compounds readily dissociate in water to form cations (Na+, K+, Rb+) and hydroxide anions (OH-):
NaOH -> Na+ + OH-
KOH -> K+ + OH-
RbOH -> Rb+ + OH-
Since these hydroxides completely dissociate into ions, they are considered strong electrolytes. The resulting solution contains a high concentration of ions, which enables efficient conduction of electric current.
It's important to note that not all compounds are strong electrolytes. Some substances, such as weak acids or weak bases, only partially dissociate in water, leading to a lower concentration of ions and a lower electrical conductivity.
However, NaOH, KOH, and RbOH, being hydroxides of strong alkali metals and alkali earth metals, readily and completely dissociate, making them strong electrolytes.
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A sample containing 27. 0 moles of propane gas at a temperature of 25. 0 °C is stored in a 12. 5 liter cylinder. What is the pressure of the gas inside the cylinder?
The pressure of the gas inside the cylinder is 52.90 atm
Given is the number of moles of gas, the temperature and the volume of the gas and we need to find the pressure of the gas inside the cylinder, for this we can use the ideal gas law equation:
PV = nRT
Where:
P = Pressure of the gas (in units of pressure, such as atm)
V = Volume of the gas (in liters)
n = Number of moles of the gas
R = Ideal gas constant (0.0821 L·atm/(mol·K))
T = Temperature of the gas (in Kelvin)
First, let's convert the temperature from Celsius to Kelvin:
T = 25.0 °C + 273.15 = 298.15 K
Now we can substitute the values into the ideal gas law equation:
P × 12.5 L = 27.0 moles × 0.0821 L·atm/(mol·K) × 298.15 K
Simplifying the equation:
P × 12.5 L = 661.2587 L·atm
Dividing both sides by 12.5 L:
P = 661.2587 L·atm / 12.5 L
P ≈ 52.90 atm
Therefore, the pressure of the gas inside the cylinder is approximately 52.90 atm.
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We can use the ideal gas law equation to determine the pressure of a gas within a cylinder:
PV = nRT
Where:
P is the pressure of the gas (in units of pressure, such as atm)
V is the volume of the gas (in units of volume, such as liters)
n is the number of moles of the gas
R is the ideal gas constant (0.0821 L·atm/(mol·K))
T is the temperature of the gas (in units of temperature, such as Kelvin)
we need to convert the temperature from Celsius to Kelvin:
T(K) = T(°C) + 273.15
T(K) = 25.0 °C + 273.15
T(K) = 298.15 K
Now we can plug the data into the ideal gas law equation as follows:
P * 12.5 L = 27.0 moles * 0.0821 L·atm/(mol·K) * 298.15 K
Simplifying the equation:
P = (27.0 moles * 0.0821 L·atm/(mol·K) * 298.15 K) / 12.5 L
Calculating the pressure:
P ≈ 5.046 atm
As a result, the gas inside the cylinder is under a pressure of about 5.046 atm.
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Balance the following chemical reaction equation using the smallest whole number coefficients.
The sum of the coefficients is: ________ (Please enter a whole number, and don’t forget to add in any coefficients of 1!)
_____ P4 + ____ H2 → ____ PH3
6H2 + P4 → 4PH3, is a balanced chemical reaction. The sum of the coefficients is 11.
A chemical reaction is a process that results in the creation of a new substance as a result of a chemical change. Energy will either be gained or lost during a chemical reaction.Rust is a coating that forms on iron's surface when it is exposed to air moisture. Rust's development indicates that a chemical reaction has taken place. Reactants are the substances that conduct a chemical reaction, while products are the byproducts of the reaction. The direction of the chemical reaction is shown by an arrow between the reactants and the products.Chemical reactions can be categorized as a combination reaction, decomposition reaction, or replacement reaction depending on the sort of change that is visible.To know more about Chemical reactions visit : https://brainly.com/question/14929452
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If a gas is cooled from 323.0 K to 273.15 K and the volume is kept constant what final pressure, in atm, would result if the original pressure was 750.0 mmHg?
If a gas is cooled from 323.0 K to 273.15 K and the volume is kept constant, 0.77 atm is the final pressure, in atm, would result if the original pressure was 750.0 mmHg.
The force delivered perpendicularly to an object's surface per unit area across which the force is dispersed is known as pressure (symbol: p / P).[1]: 445 The pressure proportional to the surrounding air is known as gauge pressure, also spelt gauge pressure[a].
Pressure is expressed using a variety of units. Some of these are calculated by dividing a unit of force by a unit of area; for instance, the metric system's unit of pressure, a pascal (Pa), is equal to one newton every square metre (N/m2).
P₁/T₁ = P₂/T₂
P₂ = P₁T₂/T₁
= 0.91 atm × 273.15 K / 323 K
= 0.77 atm
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What is this numbers Atomic number and Atomic mass? Using a periodic table, what kind of material is this? Thank you :))
Lithium-7 is the name given to an atom with a nucleus composed of 3 protons and 4 neutrons with a mass number of 7.
The number of protons each element contains determines its atomic number, which is used to distinguish one element from another. The total number of protons and neutrons in an element determines its mass number.
What are the things does the atomic number tell you?The atomic number of an element or isotope indicates how many protons are present in each atom. The mass number of an element or isotope indicates how many protons and neutrons are present in its atoms. As a result, the atomic number is also determined by the number of protons, which is always equal to the number of electrons in a neutral atom. The protons, neutrons, and electrons are the three primary atomic particles. The quantity of protons in an atom is indicated by its atomic number. This is what distinguishes one element from other elements. While maintaining its elemental nature, an atom can gain or lose electrons or neutrons.To learn more about : Atom
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this is a lot of points and I will give brainlets for the correct answer
Answer:13132
Explanation:123123
Chemical equations need to be _________
Long
Periodic
Balanced
Advanced
Answer:
advanced
Explanation:
Answer:
Balanced
Explanation:
..............
Choose the correct equilibrium expressions and match them to their appropriate reaction:
The correct equilibrium expressions that match the given reactions are;
a --> 1b ---> 8c ---> 10d ---> 14What is the equilibrium expression?We know that in a chemical reaction, there is a number that shows us the extent to which the reactants have been converted into products. We know that the more the reactants are converted into products, the more this value is large and positive. On the other hand, if a lot of the reactants are not converted into products then the value would be negative and small.
This value that I have talking about is called the equilibrium constant. We can be able to obtain the equilibrium constant from the law of mass action. It is the ratio between the concentrations of the products and the reactants all raised to the power of the stoichiometric coefficients.
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Decide whether each proposed multiplication or division of measurement is possible. If it is possible, write the result in the last column of the table.
Answer:
See attached image.
Explanation:
The explanations are on the attachment. The numerical results are below.
1. 63g/7cm^3 = 9 g/cm^3
2. The m or mm must be converted so that the units are the same. 1 m = 1000 mm. I'll convert the meters to mm: 0.080 m = 80 mm.
480 mm^2/80 mm = 6 mm
3. L times L makes no physical sense, unless this is a new Star Wars technique for making dark matter. Entertaining, but useless.
A calculation based upon _______is only as accurate as the device used for measurement.
two major products result from this reaction draw teh second expected prodcut of the reaction then dtaw a stepwise mechanism that shows the formation of the first proudct shjown:
The main answer to your question is that two major products are formed from this reaction. The first product is formed through a stepwise mechanism that involves the formation of an intermediate. The second expected product can be drawn by considering the possible rearrangements and products that can result from the reaction.
An explanation of the reaction and its products is that it involves a chemical reaction between two reactants.
The reaction proceeds through a series of steps that involve the formation of an intermediate.
The intermediate then undergoes a series of transformations that result in the formation of the first product.
The second expected product can be drawn by considering the possible rearrangements and products that can result from the reaction.
In summary, the reaction produces two major products, and the first product is formed through a stepwise mechanism that involves the formation of an intermediate. The second expected product can be drawn by considering the possible rearrangements and products that can result from the reaction.
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What mass of silver nitrate will react with 5.85 grams of
sodium chloride to produce 14.35 grams of silver chloride
and 8.5 grams of sodium nitrate?
Explain how you would determine the charge of a metal, a non metal and a transition metal for an ion within a compound.
Explanation:
for a transition metal you can determine the charge by the number after it e.g chromium(ii) In this case it has a charge of 2+ but for metals and non metals its charge is determined by the group it is in for
e.g hydrogen; we are meant to find its charge, it is on the group1 of the periodic table and so has a charge of +1. anyways do you mean within a compound like hydrogen peroxide or silver chloride ?
write the net ionic equation for the precipitation of magnesium phosphate from aqueous solution
The net ionic equation for the precipitation of magnesium phosphate from aqueous solution can be written as Mg²⁺(aq) + 3PO₄³⁻(aq) → Mg₃(PO₄)₂(s).
In this process, phosphate ions (PO₄³⁻) and magnesium ions (Mg²⁺) from the aqueous solution combine to generate solid magnesium phosphate (Mg₃(PO₄)₂.
The net ionic equation represents the overall reaction, focusing on the species directly involved in the precipitation process and omitting spectator ions that do not undergo any change. Hence, the reaction is Mg²⁺(aq) + 3PO₄³⁻(aq) → Mg₃(PO₄)₂(s).
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a given mass of gas occupies 500 cm³ at 25° C calculate the temperature in degree Celsius at which its volume becomes doubled at constant pressure
At constant temperature, if the volume of the gas is doubled, the pressure also doubles. The new pressure of the gas is 50°C.
What is Charles's law?Charles's law states that "the volume occupied by a definite quantity of gas is directly proportional to its absolute temperature.
It is expressed as;
V₁/T₁ = V₂/T₂
Given that;
Initial volume of gas V₁ = 500cm³Initial temperature of gas T₁ = 25°CIf final volume is double of initial volume.
Final volume V₂ = 2 × 500cm³ = 1000cm³Final temperature T₂ = ?V₁/T₁ = V₂/T₂
V₁T₂ = V₂T₁
T₂ = V₂T₁ / V₁
T₂ = ( 1000cm³ × 25°C ) / 500cm³
T₂ = 25000m³°C / 500cm³
T₂ = 50°C
At constant temperature, if the volume of the gas is doubled, the pressure also doubles. The new pressure of the gas is 50°C.
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The formula for propane is c3h8 what would you need to know to answer how much energy is required to combust propane vs gasoline
I have four questions:
1- what can you say about the number of protons in these three metals as you look down in the group. (lithium, sodium, and potassium.)
2- what can you say about the mass number of the three metals.(lithium, sodium, and potassium.)
3- what is similar about the structures of an atom of lithium and an atom of sodium?
4- what is similar about the structures of lithium sodium and potassium?
The number of protons in lithium is 3, in sodium is 11 and in potassium is 19 whereas the mass number of lithium is 6.941 u, the mass number of sodium is 22.989769 u and the mass number of potassium is 39.0983 u.
What is the mass number of lithium, sodium, and potassium?Numbers of Protons:
The total number of protons in lithium is 3.
The total number of protons in sodium is 11.
The total number of protons in potassium is 19.
Mass Number:
The mass number of lithium is 6.941 u.
The mass number of sodium is 22.989769 u.
The mass number of potassium is 39.0983 u.
Structure of Lithium and Potassium:
Lithium and potassium have a similarity in them that they all have one electron in their outermost orbit.
Structure of Sodium and Potassium:
Sodium and potassium have a similarity in them that they all have one electron in their outermost orbit.
So we can conclude that the number of protons in lithium is 3, in sodium is 11 and in potassium is 19.
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In lab, a dialysis bag was filled with a 10% sucrose solution and placed in an unlabeled beaker filled with clear liquid. The dialysis bag was made of a semipermeable membrane that allowed the free passage of water, but was not permeable to sucrose. After two hours, the bag in the beaker decreased in size, lost volume, and became flaccid. Therefore, at the beginning of the experiment, the solution in the bag was ____________ compared to the solution in the beaker. g
Answer:
Of lower concentration or less concentrated
Explanation:
Osmosis is the movement of solvent from a region of lower concentration of solute to a region of higher concentration of solute through a semipermeable membrane in order to equalize the concentration of the solutions on both sides.
Since the membrane of the bag is semipermeable, then the fact that the bag in the beaker decreased in size, lost volume, and became flaccid indicates that the solution in the bag is of lower solute concentration than the solution in the beaker hence the movement of water molecules into the beaker by osmosis.
Physical properties are used to classify and compare substances. Physical
properties can include density, thermal conductivity, electrical conductivity,
solubility, magnetism, melting point, and boiling point. Which statement is
correct about all of these physical properties?
They involve a change in the state of matter.
They involve the production of new substances.
They can be measured only after a change in state.
They are independent of the amount of the sample present.
Answer:
Physical properties involve a change in the state of matter.
Explanation:
A chemical change would change the chemical composition.
A physical change would change the state of matter, for example solid to liquid to gas are changes in state. So, this means when water changes states of matter it is a physical change.
A quasi-equilibrium process is a process during which a system never remains in equilibrium at all times.
a. true
b. false
What is the formula for the compound iodine trichoride?
Answer:
Cl 3 I
Explanation:
Molecular Weight. 233.36. Appearance. Red-orange to brown powder or chunks. Melting Point. 63 °C
Which statement best explains why the atomic theory developed efficiently?
Scientists ignored all previous knowledge about atoms.
Scientists had used creativity and the scientific method in their investigations.
Scientists had used a philosophical viewpoint as a method of investigation.
Scientists rarely repeated experiments to make sure the results were correct.
The statement which best explains why the atomic theory developed efficiently is that scientists had used creativity and the scientific method in their investigations regarding the atom.
What is an atom?
An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
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Answer: the answer is B
Explanation: just did it hope it helps
HELP FAST!
This food chain is one part of a ____ within an ecosystem.
A)
biome
B)
community
C)
population
D)
species
Answer:
Species
Explanation:
which of the molecular orbital diagrams is correctly filled for the diatomic molecule r2? (each atom of r has six valence electrons in ns and np orbitals.)
Atomic orbitals are the areas to the left and right of the dashed lines. The possible molecular orbitals that they can form are indicated by the dashed lines.
Normally, in diatomic molecular orbitals, the atomic orbitals with the closest energy level can overlap with each other and form molecular orbitals. Therefore, the atomic orbitals generally tend to overlap one by one from the lowest potential energy to the highest potential energy. For example, in a homonuclear diatomic molecule, which means that both atoms are the same element, the same orbitals will overlap together and form molecular orbitals.
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Think of the different types of reactions you have learned about. How can you tell if they absorb energy or release energy, and at the molecular level, how are they different?
Answer:
Absorbed will be harder to spot than releasing because take this as it's like a tire. A tire will go smaller when it has no air compared to when it has air. But absorbed it the opposite. It gets bigger with more air and etc.
Explanation:
My answer don't copy and paste change it a little.
what is the density of 80 gram of a substance occupying a volume of 250 c.m cube at 25°C and 1 atmosphere?
Answer:
Density = 0.32g/mL
Explanation:
Density of a substance can be calculated using the formula:
Density (g/mL) = mass (g)/volume (mL)
According to the information provided in this question, mass of the substance = 80grams, volume = 250cm³/mL
Note that, the pressure and temperature are not needed to calculate the density of the substance.
Density = 80/250
Density = 0.32g/mL
Hello can someone pls help me with this question! (Please explain why)
QUESTION: How is an increase in surface area achieved?
A. increasing the size of the reactant particles
B. decreasing the size of the reactant particles
Answer:
letter A.
Explanation:
the rate of a chemical reaction can be raised by increasing the surface area of a solid reactant. this is done by cutting the substance into small pieces, or by grinding it into a powder.if the surface area of a reactant is inceased: more particles are exposed to the other reactant.
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if 1 mol of a fatty acyl-coa containing 20 carbon atoms undergoes three rounds of β oxidation, how many mol of atp are produced from the complete aerobic catabolism of the products of these three rounds? (the remaining acyl-coa is not catabolized further.)
From the complete aerobic catabolism of the products of three rounds of β-oxidation of 1 mol of a fatty acyl-CoA containing 20 carbon atoms, approximately 60 mol of ATP would be produced.
The complete aerobic catabolism of the products of three rounds of β-oxidation of 1 mol of a fatty acyl-CoA containing 20 carbon atoms can yield a certain amount of ATP. Let's break down the process step-by-step to determine the amount of ATP produced.
1. Each round of β-oxidation involves four key steps: oxidation, hydration, oxidation, and thiolysis. In each round, the fatty acyl-CoA molecule loses two carbon atoms as acetyl-CoA, generating one molecule of NADH and one molecule of FADH2. Therefore, after three rounds of β-oxidation, the fatty acyl-CoA molecule would yield six molecules of acetyl-CoA, three molecules of NADH, and three molecules of FADH2.
2. Each molecule of acetyl-CoA can enter the citric acid cycle (also known as the Krebs cycle or TCA cycle), where it undergoes a series of reactions that generate three molecules of NADH, one molecule of FADH2, and one molecule of GTP (which can be converted to ATP). Therefore, the six molecules of acetyl-CoA produced from the three rounds of β-oxidation would yield 18 molecules of NADH, 6 molecules of FADH2, and 6 molecules of GTP.
3. Each molecule of NADH can generate approximately 2.5 molecules of ATP when it enters the electron transport chain (ETC) and undergoes oxidative phosphorylation. Similarly, each molecule of FADH2 can generate approximately 1.5 molecules of ATP. Therefore, the 18 molecules of NADH would yield approximately 45 molecules of ATP, and the 6 molecules of FADH2 would yield approximately 9 molecules of ATP.
4. The 6 molecules of GTP can be converted to ATP directly, resulting in 6 molecules of ATP.
5. Finally, summing up the ATP generated from NADH, FADH2, and GTP, we have approximately 45 + 9 + 6 = 60 molecules of ATP.
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Which state of matter has the leader molecular motion explain your answer
Someone please answer this one as soon as you see it thank you so much for your time
Which list of lab equipment and tools is a complete list needed to heat a reaction in a beaker with high heat?
a. beaker, ring stand, iron ring, Bunsen burner, beaker tongs, and wire gauze
b. beaker, ring stand, utility clamp, beaker tongs, and Bunsen burner
c. beaker, hot plate, Bunsen burner, and beaker tongs
Answer:
The answer is A. It has the most comprehensive list of what is needed for a beaker reaction with high heat.
The list of lab equipment and tools is a complete list needed to heat a reaction in a beaker with high heat beaker, ring stand, iron ring, Bunsen burner, beaker tongs, and wire gauze. The correct option is a.
What are lab equipments?Lab equipments are those objects or instruments that are used in a science or other types of the lab. These equipments are used in many processes of a lab.
These equipments include many scientific instruments and beakers and measuring scales for calculating the chemicals and or results. A beaker is used to keep the chemicals and other items.
The ring stand is used to put open the burner to keep the beaker on it. Tongs are to hold a beaker, and gauze is a type of burner.
Thus, the correct option is a. beaker, ring stand, iron ring, Bunsen burner, beaker tongs, and wire gauze.
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How many moles of O2 are formed from 1.252 g of HgO?
Moles of Hg
Given mass/Molar mass1.252/200.590.006mol2 moles produce 1 mol O2
1 mol produces 1/2mol O_2
0.006 mol produces
0.006(0.5)0.003mol