Be sure to answer all parts. Enter your answers in scientific notation. Assume that the total volume of seawater on Earth is 1.57 % 1021 L. Also, assume that seawater contains 4.01 percent sodium chloride by mass and that its density is 1.03 g/mL. Calculate the total mass of sodium chloride in kilograms and in tons. (1 ton = 2,000 lb; 1 kg = 2.205 lb, or 1 lb = 453.6 g.) x 10 kg x 10 tons