\The specific heat of aluminum is 0.21 cal g°C . How much heat is released when a 10 gram piece of aluminum foil is taken out of the oven and cools from 50 to 10 °C?

Question

asked Sep 7, 2020 210k views

2 Answers

As Above So Below · Answer 1 · 2020-09-13T11:18:05+0000

Answer: The amount of heat released is 84 calories.

Explanation:

The equation used to calculate the amount of heat released or absorbed, we use the equation:

$Q= m* c* \Delta T$

where,

Q = heat gained or released = ? Cal

m = mass of the substance = 10g

c = specific heat of aluminium = 0.21 Cal/g ° C

Putting values in above equation, we get:

$\Delta T={\text{Change in temperature}}=(10-50)^oC=-40^oC$

Q=10g* 0.21Cal/g^oC*-40^oC

Q = -84 Calories

Hence, the amount of heat released is 84 calories.