Question

The total volume of seawater is 1.5 times 10 to the twenty- first power L. Assume that seawater contains 3.1 percent sodium chloride by mass and that it's density is 1.03 g/mL. Calculate the total mass of sodium chloride in kilograms and in tons. ( 1 ton = 2000 lb. ; 1 lb. = 453.6 g. )

Answer 1

1.03 g/mL x 1000 mL x 0.031 = ? g NaCl in 1L
? g NaCl/L x 1.5E21 L = mass NaCl in total sea water.
Convert from grams to kg and tons. The conversion factors are given.