211k views
4 votes
Quantity of Heat 17.35. You are given a sample of metal and asked to determine. its specific heat. You weigh the sample and find that its weight 28.4 N. You carefully add 1 .25x 10ªJ of heat energy to the sample and find that its temperature rises 18.0 °C. What is the sample’s specific heat?



User Fenster
by
7.9k points

1 Answer

4 votes

To determine the specific heat of a metal, use the formula Q = mcΔT. Given the values of heat absorbed and temperature change, we can solve for c. In this case, the specific heat of the metal is 0.198 kJ/(kg · °C).

To determine the specific heat of a metal, we need to use the formula:

Q = mcΔT

Where;

Q is the quantity of heat energy absorbed by the metal

m is the mass of the metal

c is the specific heat of the metal

ΔT is the change in temperature of the metal

Given that the metal absorbs 1.43 kJ of heat energy and its temperature increases from 24.5 °C to 39.1 °C, we can plug in the values:

1.43 kJ = 0.217 kg x c x (39.1 °C - 24.5 °C)

Solving for c, we get:

c = 0.198 kJ/(kg · °C)

The specific heat of the metal is 0.198 kJ/(kg · °C).

User Bishwas Mishra
by
9.2k points