Question

How much heat do you need to raise the temperature of 150 g of ice from -30°C to -15°C?

Answer 1

1125 calories

Explanation:

Required Heat to raise the given temperature by `Delta theta` is given by:
`H = m*c*Delta theta`, where, m is the mass, c is the specific heat capacity of the material and `Delta theta` is change in temperature. Using for ice c = 0.5 Cal/g/°C,
We get,
`H=150*0.5*(-15-(-30)`
`H=75*15=1125 cal`