How Many Grams of NaOH Are Needed to Make 750

question 7

Multiple Choice

How many grams of NaOH are needed to make 750 mL of a 2.5% (w/v) solution?

• A)3.9 g
• B)7.5 g
• C)19 g
• D)20 g
• E)50 g

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Definitions:

Density

A measure of mass per unit of volume; the amount of matter contained within a given volume.

Volume

The capacity of space an entity or material possesses.

Mass

A physical property indicating the amount of matter in an object, typically measured in kilograms or grams.

Density

A characteristic indicating the amount of mass contained in a given volume of a material.