In a rocket motor fuelled with Heptane `(C_(7)H_(16))` How many kg of liquid oxygen should be provided with each kg of heptane sample (which is `50%` pure) for its complete combustion :-

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 sugar, C_6H_12O_6 , should be dissolved in 0.5 kg of water at 25^@C to reduce the vapour pressure of water by 1%?

CH_4+2O_2rarrCO_2+2H_2O the equation describe the combution of me-thane in air: How many moles of oxygen is required for the complete combustion of 16g CH_4 ?

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)

If isobutane and n-butane are present in a gas, then how much oxygen should be required for complete combustion of 5 kg of this gas

If isobutane and n-butane are present in a gas, then how much oxygen should be required for complete combustion of 5 kg of this gas

Benzene burns in oxygen according to the equation 2C_(6)H_(6(l))+15O_(2(g))rarr12CO_(2(g))+6H_(2)O_((l)) . How many litres of oxygen are required at STP for the complete combustion of 39g of liquid benzene?

(a) How much heat should be provided to ice of 720 g mass, lying at - 10^@C to melt it to water at 0^@C ? (b) How much heat should be provided to water at 0^@C to increase its temperature to 100^@C ?(c) How much heat should be given to water at 100^@C to transform it completely into water ? (d) Totally, how much heat should be given to ice of 720 g at -10^@C to convert it completely into vapour ? (C"ice"=2220 "J kg"^(-1) K^(-1), C"water"=4190 "J kg"^(-1) K^(-1) , LF=333 "kJ"/"kg", LV=2256 "kJ"/"kg" )

The vapour pressure of hexane (C_(6)H_(14)) and heptane (C_(7)H_(16)) at 50^@C are 408 torr and 141 torr, respectively, The composition of the vapour above a binary solution composition a mole fraction of 0.300 hexane is (y_(6) =mol fraction of hexane and y_(7) =mol fraction of heptane)