Percent Mass-Volume Solutions Practice

What is the first step in calculating percent mass/volume solutions?

• Converting the percent value to a decimal

• Adding water to the solute

• Calculating the volume of the solution

• Measuring the solute directly

How many grams of copper sulfate are needed to make 100 milliliters of a 3% solution?

• 1 gram

• 3 grams

• 5 grams

• 10 grams

What is the correct decimal conversion for a 15% solution?

• 0.015

• 1.5

• 15

• 0.15

How many grams of NaOH are required for 50 milliliters of a 15% solution?

• 10 grams

• 15 grams

• 7.5 grams

• 5 grams

What is the concentration in grams per milliliter for a 20% copper sulfate solution?

• 0.02 grams per milliliter

• 20 grams per milliliter

• 2 grams per milliliter

• 0.2 grams per milliliter

How much copper sulfate is needed for 100 milliliters of a 20% solution?

• 5 grams

• 20 grams

• 10 grams

• 2 grams

For a 5% NaOH solution, what is the correct decimal conversion?

• 0.05

• 0.5

• 5

• 0.005

How many grams of NaOH are needed to prepare 200 milliliters of a 5% solution?

• 15 grams

• 5 grams

• 10 grams

• 20 grams

What is the purpose of converting percent to grams per milliliter in solution preparation?

• To simplify the calculation process

• To match the units of concentration with volume

• To increase the accuracy of the solution

• Because it's a standard laboratory procedure

Why is water's density important in percent mass/volume solution calculations?

• It changes the boiling point of the solution

• It determines the solubility of the solute

• It affects the color of the solution

• It's equivalent to 1 gram per milliliter, simplifying conversions