plzzz do fast

(, 2 * A water Sample contains Mg CHCO3), = 21:5ppm i A CaCHCO3), - 27.0ppm, Casou = 46.2 ppm, caclo - IL-2 ppm, KCI = 10.3 ppm. Calculate the amount of line and soda (both 100% Pure) for the treatment of 50,000L of water 993 A coal sample has the following porcentage Composistion C= 83.1%, H=6.7%,0= 4.7%.,S=0.5% N = 0.5% and ash=1%. calculate the theoretical minimum weight of air required for the complete Combustion of ikg of coal