KVV E-Modules

1. What is 25% of 200?

A: 25 B: 50 C: 75 D: 100

2. 60 is what percent of 300?

A: 10% B: 15% C: 20 D: 25

How many grams of NaCl are needed to prepare 250 mL of a 0.9% w/v solution?

A: 2.25 g B: 0.9 g C: 22.5 g D: 0.225

How much ethanol (in mL) is required to prepare 200 mL of a 70% v/v solution?

A: 70ml D: 100 C: 140 D: 200

To make 100 mL of a 20% w/v glucose solution, how much glucose is needed?

A: 2g B: 10 C: 20 D: 25