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Specific Heat Problems

Last updated almost 2 years ago

10 questions

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Question 1

1.

For q= mcΔT : identify each variables by name.

Draggable item		Corresponding Item
m		heat
c		mass
ΔT

Question 2

2.

For q= mcΔT : identify the units associated with each variable.

Draggable item		Corresponding Item
m		J
c		g
ΔT

Question 3

3.

Heat is not the same as temperature, yet they are related. Explain how they differ from each other.

Solve the following problems.  Make sure to include the proper units in the answer. Round as indicated in each problem.  You must show your work.  

Question 4

4.

Gold has a specific heat of 0.129 J/(g×°C). How many joules of heat energy are required to raise the temperature of 15 grams of gold from 22 °C to 85°C? Round to the nearest whole number

Question 5

5.

An unknown substance with a mass of 100 grams absorbs 1000 J while undergoing a temperature increase of 15 °C. What is the specific heat of the substance? Round to the nearest hundrendth

Question 6

6.

If the temperature of 34.4 g of ethanol increases from 25 °C to 78.8 °C, how much heat has been absorbed by the ethanol? The specific heat of ethanol is 2.44 J/(g×°C). Round to the nearest whole number.

Question 7

7.

Graphite has a specific heat of 0.709 J/(g×°C). If a 25 gram piece of graphite is cooled from 35 °C to 18 °C, how much energy was lost by the graphite?. Round to the nearest whole number

Question 8

8.

Copper has a specific heat of 0.385 J/(g×°C). A piece of copper absorbs 5000 J of energy and undergoes a temperature change from 100 °C to 200 °C. What is the mass of the piece of copper? Round to the nearest tenth.

Question 9

9.

45 grams of an unknown substance undergoes a temperature increase of 38 °C after absorbing 4172.4 Joules. What is the specific heat of the substance? Round to the nearest hundredth

Question 10

10.

A 40 g sample of water absorbs 500 Joules of energy. How much did the water temperature change? The
specific heat of water (liquid) is 4.18 J/(g×°C). Round to the nearest whole whole number

specific heat

q

change in temperature

J/(g°C)

q

°C