Answer:
The container that has 0.20 moles of the compound has more moles compared to the container that has 0.15 moles of compound A
Explanation:
The molarity is defined as the concentration of a substance in solution, expressed as the number of moles of a solute per liter of solution.
From the given information.
In compound A
Molarity of the solution = 0.15 molar = 0.15 m/L
It implies that, In compound A, there are 0.15 moles present in 1 L of the solution.
Similarly;
In compound B
Molarity of the solution = 0.20 molar = 0.20 m/L
It implies that, In compound B, there are 0.120 moles present in 1 L of the solution.
Thus, we can conclude that:
The container that has 0.20 moles of the compound has more moles compared to the container that has 0.15 moles of compound A
Answer: Boiling and Evaporation: Evaporation is the change of a substance from a liquid to a gas. Boiling is the change of a liquid to a vapor, or gas, throughout the liquid.
Explanation: Boiling and Evaporation: Evaporation is the change of a substance from a liquid to a gas. Boiling is the change of a liquid to a vapor, or gas, throughout the liquid.
<h3>Answer:</h3>
2.55 × 10²² Na Atoms
<h3>Solution:</h3>
Data Given:
M.Mass of Na = 23 g.mol⁻¹
Mass of Na = 973 mg = 0.973 g
# of Na Atoms = ??
Step 1: Calculate Moles of Na as:
Moles = Mass ÷ M.Mass
Moles = 0.973 g ÷ 23 g.mol⁻¹
Moles = 0.0423 mol
Step 2: Calculate No, of Na Atoms as:
As 1 mole of sodium atoms counts 6.022 × 10²³ and equals exactly to the mass of 23 g. So, we can write,
Moles = No. of Na Atoms ÷ 6.022 × 10²³ Na Atoms.mol⁻¹
Solving for No. of Na Atoms,
No. of Na Atoms = Moles × 6.022 × 10²³ Na Atoms.mol⁻¹
No. of Na Atoms = 0.0423 mol × 6.022 × 10²³ Na Atoms.mol⁻¹
No. of Na Atoms = 2.55 × 10²² Na Atoms
<h3>Conclusion: </h3>
2.55 × 10²² sodium atoms are required to reach a total mass of 973 mg in a substance of pure sodium.
For the given chemical reaction, there will be no shift in the equilibrium due to addition of a catalyst.
<h3>Equilibrium shift</h3>
Catalyst is a substance that speeds up the rate of chemical reaction. The presence of catalyst in a chemical reaction do not affect the shift.
Hence for the given chemical reaction, there will be no shift in the equilibrium due to addition of a catalyst.
Learn more on catalyst here: brainly.com/question/12507566
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Answer:
The answer is "".
Explanation:
Please finds the complete question in the attached file.
The mass of acetone to be weighed is