How many grams of potassium chloride should be added to 1.5 kg of water to lower its freezing point to ` - 7.5^(@) C`?

How many grams of KCl should be added to 1 kg of water to lower its freezing point to - 8.0 ^(@)C ? ( K_(f) = 1.86 K kg/mol)

How many grams of KCI should be added to 1000 g of water , so that the freezing point reduces to - 10^(@)C? (K_(f) "for water "=1.86""^(@)C kg mol ^(-1))

How maby grams of methyl alcohol should be added to 10 litre tank of water to prevent its freezing at 268K ? (K_(f) for water is 1.86 K kg mol^(-1))

What weight of glycerol should be added to 600 g of water in order to lower its freezing point by 10^@ C ? (K_f=1.86^@ C m^(-1))

What mass of ethylene glycol (molar mass = "62.0 g mol"^(-1) ) must be added to 5.50 kg of water to lower the freezing point of water from 0^(@)C to -10.0^(@)C ( k_(f) for water = "1.86 K kg mol"^(-1) ).

How much amount of NaCl should be added to 500 g of water rho = 1.00g//mL) to decrease the freezing point of water to -0.3^@C ? (The freezing point depression constant for water = 2 Kkgmol^(-1))