C. The heat released when the aluminum is cooled from 70°C to 50°C is -180 J.
What is Specific heat capacity?
Specific heat capacity is the quantity of heat needed to raise the temperature per unit mass.
Heat released when the aluminum is cooled
The heat released when the aluminum is cooled from 70°C to 50°C is calculated as follows;
Q = mcΔθ
where;
- m is mass of the aluminum
- c is specific heat capacity
- Δθ is change in temperature
Q = (10)(0.9)(50 - 70)
Q = -180 J
Thus, the heat released when the aluminum is cooled from 70°C to 50°C is -180 J.
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