Measures of Concentration: Molarity

Question 1

Calculate the number of moles of Cu2SO4 present:A: B:

Revolt · Accepted Answer

14.1 g; Selection 1: 14.1 g; Selection 2: 0.0632 mol

Question 2

B:

Revolt · Accepted Answer

0.0632 mol

Question 3

Calculate the molarity of the solution:C: D:

Revolt · Accepted Answer

250.0 mL; Selection 1: 250.0 mL; Selection 2: 0.253 M

Question 4

D:

Revolt · Accepted Answer

0.253 M

Question 5

E:

Revolt · Accepted Answer

1.34 M

Question 6

Calculate the number of moles of KCl:A: B: C:

Revolt · Accepted Answer

15.0 g; Selection 1: 15.0 g; Selection 2: 74.45 g/mol; Selection 3: 0.201 mol

Question 7

Calculate the number of moles of H3BO3 present:A: B: C:

Revolt · Accepted Answer

22.5 g; Selection 1: 22.5 g; Selection 2: 61.83 g/mol; Selection 3: 0.364 mol

Question 8

A solution of hydrochloric acid has a molarity of 2.25 M HCl. If a reaction requires 5.80 g of HCl, what is the number of moles of solute required? Assume a molecular mass of 36.45 g for the HCl. mol HCl

Revolt · Accepted Answer

PENDING

Question 9

This question builds on your problem-solving from the previous question.A solution of hydrochloric acid has a molarity of 2.25 M HCl. If a reaction requires 5.80 g of HCl, what volume of solution should be used? Use the number of moles you calculated in the previous question: 0.159 mol HCl.

Revolt · Accepted Answer

PENDING

Question 10

Initially a beaker contains 225.0 mL of a 0.350 M MgSO4 solution. Then 175.0 mL of water are added to the beaker. Find the concentration of the final solution.What is the final volume? mL What is the new concentration? M

Revolt · Accepted Answer

Part 1: 400.0; Part 2: 0.197

Measures of Concentration: Molarity Answers

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