100 mL of a water sample contains 0.81 g of calcium bicarbonate and 0.73 g of magnesium bicarbonate. The hardness of this water sample expressed in terms of equivalents of CaCO3 is: (Molar mass of calcium bicarbonate is 162 g.mol-1 and magnesium bicarbonate is 146 g.mol-1)

100 mL of a water sample contains 0.81 g of calcium bicarbonate and 0.

1.	100 mL of a water sample contains 0.81 g of calcium bicarbonate and 0.73 g of magnesium bicarbonate. The hardness of this water sample expressed in terms of equivalents of CaCO3 is: (Molar mass of calcium bicarbonate is 162 g.mol-1 and magnesium bicarbonate is 146 g.mol-1)
A.	5,000 ppm
B.	1,000 ppm
C.	100 ppm
D.	10,000 ppm
Answer» E.