Question

When you turn on the hot water to wash dishes, the water pipes have to heat up. How much heat is absorbed by a copper water pipe with a mass of 2.3 kg when its temperature is raised from 20.0C to 80.0 C?

Answer 1

Answer:

53,130 J

Explanation:

When a certain substance absorbs heat, the temperature of the substance increases according to the equation:

$Q=mC\Delta T$

where

Q is the amount of heat absorbed

m is the mass of the substance

C the specific heat capacity

$\Delta T$ the change in temperature of the substance

In this problem:

m = 2.3 kg is the mass of copper

$\Delta T=80.0C-20.0C=60.0^{\circ}C$ is the increase in temperature

$C=385J/kgC$ is the specific heat of copper

So, the amount of heat absorbed is:

$Q=(2.3)(385)(60)=53,130 J$