Question

You evaporate 2,500 grams of sea water and receive 95 grams of dissolved salts. What was the salinity of the sea water?

a. 3.8 percent
b. 5 percent
c. 8 percent
d. 10 percent

Answer 1

The salinity of the sea water is found by dividing the mass of dissolved salts by the mass of sea water and then multiplying by 100%. Using this method, the salinity of the sea water is calculated to be 3.8%, which corresponds to option a.

Step-by-step explanation:

To calculate the salinity of the seawater, you would use the following formula:

Salinity (%) = (Mass of dissolved salts / Mass of seawater) × 100%

Using the given data:

Salinity (%) = (95g / 2500g) × 100%

Salinity (%) = 0.038 × 100%

Salinity (%) = 3.8%

Therefore, the correct answer is a. 3.8 percent.