Question

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? A) 84 calories B) 290 calories C) 390 calories D) 810 calories

Answer 1

A on usatest prep

Step-by-step explanation:

Answer 2

Answer;

A) 84 calories

Explanation;

• Specific Heat Capacity is the energy, transferred as heat, that is required to raise the temperature of one gram of a substance by one degree Celsius.
• Quantity of heat = mcΔt; Where m is the mass in kilograms, c is the specific heat capacity and Δt is the change in temperature.

Mass = 10 g, specific heat capacity = 0.21 cal g°C, and Δt = 10 °C

Therefore;

Heat = 10 × 0.21 cal g°C × 40 °C

= 84 calories