Measures of Concentration: Molarity Answers

10 verified answers1 views
6

Which is a way to express concentration of a solution?

A
parts per billion
B
moles
C
molar mass
D
force per square meter
7

Josh prepares a solution by mixing sodium nitrate and water. To calculate the molarity of the solution, Josh should calculate the moles of which substance, and why?

A
sodium nitrate, because it is the solvent
B
sodium nitrate, because it is the solute
C
water, because it is the solvent
D
water, because it is the solute
10

Which solution is the most concentrated?

A
2.0 mL of 10 M H2SO4, where H2SO4 has a molar mass of 98 g/mol
B
5.0 mL of 1.0 M PbSO4, where PbSO4 has a molar mass of 303 g/mol
C
2.0 mL of 10.5 M H2O2, where H2O2 has a molar mass of 34 g/mol
D
100 mL of 10 M NaCl, where NaCl has a molar mass of 58 g/mol

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