Molarity Problems Quiz

What is the first step in solving a molarity problem when the mass is given in grams?

• Convert grams to liters

• Convert grams to moles

• Convert liters to moles

• Convert moles to grams

How do you express the concentration of a solution in terms of molarity?

• Grams per liter

• Moles per liter

• Liters per mole

• Moles per gram

In the second problem, what is the molar mass of sodium hydroxide (NaOH) used for conversion?

• 15 g/mol

• 111 g/mol

• 40 g/mol

• 58.5 g/mol

What is the molarity of a solution if 0.375 moles of NaOH is dissolved in 0.225 liters of water?

• 0.67 M

• 1.07 M

• 1.67 M

• 2.67 M

In the third problem, what is the volume in liters when 50 milliliters is converted?

• 5 L

• 0.5 L

• 0.05 L

• 0.005 L

How many moles of NaCl are needed to make a 6 M solution in 0.05 liters of water?

• 3 moles

• 0.003 moles

• 0.3 moles

• 0.03 moles

What additional step is required in the fourth problem that was not needed in the third problem?

• Converting liters to milliliters

• Converting moles to liters

• Converting grams to moles

• Converting moles to grams

What is the molar mass of NaCl used in the fourth problem?

• 26.3 g/mol

• 111 g/mol

• 40 g/mol

• 58.5 g/mol

How many grams of NaCl are needed to make a 3 M solution in 0.15 liters of water?

• 26.3 g

• 15 g

• 30 g

• 45 g

What is the final step in solving a problem where grams are needed from moles?

• Multiply moles by molar mass

• Add moles to molar mass

• Subtract moles from molar mass

• Divide moles by molar mass