heat=masswater*specificheatwater*38
but heat=19kiloton*4.2E12J/kiloton
so if you set them equal, and for c use units of J/kgC, solve for mass.
The kiloton, which is used to measure the energy released in an atomic explosion, is equal to 4.2 ✕ 1012 J (approximately the energy released in the explosion of 1000 tons of TNT). Recalling that 1 kilocalorie of energy raises the temperature of 1 kg of water by 1°C and that 4184 joules is equal to 1 kilocalorie, calculate how many kilograms of water can be heated through 38°C by a 19 kiloton atomic bomb.
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