Question

John was asked to make a saline, or saltwater, solution for a class lab. He added 39.2 grams of salt to a beaker that had 49 milliliters of water in it. What was the concentration of salt in the water?

49 mL

39.2 g/mL

0.8 g/mL

0.8 mL

Answer 1

For every 49 milliliters of water, there are 39.2 grams of salt. So divide:
39.2/49 = 0.8g/mL

Answer 2

thanks