Question

Question 9 2 pts Ch 15:33 How many Joules of heat are required to raise the temperature of 0.7 kg of water by 22 °C? HINT: Use the equation AT Q. The specific heat capacity of water J is c = 4190 сть kg C

Answer 1

We know that, heat required to change the tempreture of a substance is, H = m x c x $\Delta$ t ...... (1)

Where,

m = mass of the substance. Here it is mass of water = 0. 7 Kg

c = specific heat capacity of water = 4190 J/Kg °C

$\Delta$t = change in tempreture. Here it is raise in tempreture of water = 22 °C

So, from 1,

H = m x c x $\Delta$ t

Or,  H = 0.7 x 4190 x 22

Or,  H = 64526 Joule.

Therefore heat required to raise the tempreture by 22° C is H = 64526 Joule. (Ans)