Question

How much heat is needed to raise the temperature of 100 g of water by 50 C, if the specific heat of water is 4,184 J/kg.C?

Answer 1

Heat required to raise the temperature of water is given as

$Q = ms\Delta T$

here we have

m = 100 g = 0.100 kg

s = 4183 J/kg C

$\Delta T = 50 ^0 C$

now we can use the above equation

$Q = 0.100 * 4184 * 50$

$Q = 20920 J$

so here it requires 20920 J heat to raise the temperature of 100 g water by 50 degree C