A solution contains 15ppm of benzene. The density of thesloution is 1.00g/ml. This means that------------
a) the solution is 15% by mass of benzene
b) 100g of the solution contains 15g of benzene
c) 1.0g of the solution contians 15 x 106 g ofbenzene
d) 1.0 L of the solution contains 15g of benzene
e) there are 15 mg of sodium chloride in 1.0g of thesolution