Question

Ocean water is approximately 0.6 M NaCl. How many grams of salt is there in 1 liter of ocean water?

A. 35 grams
B. 58.5 grams
C. 70 grams
D. 117 grams

Answer 1

The answer is A.

We know the formula for molarity :

Molarity = Number of moles ÷ Volume

Let's assume there are 0.6 moles of NaCl in 1 liter of ocean water.

Then, mass of salt is :

• Mass of one mole salt × 0.6
• 58.5 × 0.6
• 35 grams