Question

The specific heat capacity of aluminum is 0.22 cal/g°C. How much energy needs to flow into 20.0 grams of aluminum to change its temperature by 15°C?
0.017 cal
0.29 cal
66 cal
1363 cal

Answer 1

Its C. 66 cal , that's your answer to your question.

Answer 2

Answer: 66 cal

Explanation:

The Heat energy required to flow into a unit mass object to raise its temperature by 1 degree is known as specific heat capacity.

It is given by:

Q = m c ΔT

where, m is the mass, c is the specific heat capacity and ΔT is the change in temperature.

Given:

specific heat capacity of aluminum, c = 0.22 cal/g°C

mass of aluminium, m = 20.0 g  

Change in temperature, ΔT = 15°C

⇒Q = 20.0 g  × 0.22 cal/g°C × 15°C =  66 cal

The amount of energy that needs to flow into 20.0 grams of aluminum to change its temperature by 15°C is 66 cal.