Specific Heat Equation

Multiple Choice

Identify the variable for the following unit:

grams

• Q

• m

• c

• T

Multiple Choice

Identify the variable for the following unit:

joules per gram per degree Celsius

• Q

• m

• c

• T

Multiple Choice

Identify the variable for the following unit:

Celsius

• Q

• m

• c

• T

Multiple Choice

Identify the variable for the following unit:

joules

• Q

• m

• c

• T

Multiple Choice

What variable is the number 700.?

How much energy is needed to increase the temperature of 700. g of water from 22°C to 98°C?  The specific heat of water is 4.18 J/g°C.

• Q

• m

• c

• T

Multiple Choice

What variable is the number 4.18?

How much energy is needed to increase the temperature of 700. g of water from 22°C to 98°C?  The specific heat of water is 4.18 J/g°C.

• Q

• m

• c

• T

Multiple Choice

What is the change in temperature?

ΔT = T_final - T_inital

How much energy is needed to increase the temperature of 700. g of water from 22°C to 98°C?  The specific heat of water is 4.18 J/g°C.

• -76°C

• 76°C

• 120°C

• 88°C

Multiple Choice

What variable is the goal?

How much energy is needed to increase the temperature of 700. g of water from 22°C to 98°C?  The specific heat of water is 4.18 J/g°C.

• Q

• m

• c

• T

Multiple Choice

Select the derived equation to solve for the goal?

How much energy is needed to increase the temperature of 700. g of water from 22°C to 98°C?  The specific heat of water is 4.18 J/g°C.

• $$Q=mc\Delta T$$

• $$\Delta T=\frac{Q}{mc}$$

• $$m=\frac{Q}{c\Delta T}$$

• $$c=\frac{Q}{m\Delta T}$$

Multiple Choice

Solve:

How much energy is needed to increase the temperature of 700. g of water from 22°C to 98°C?  The specific heat of water is 4.18 J/g°C.

• 2 220 000 J

• 2 220 J

• 22 200 J

• 222 000 J

Multiple Choice

What variable is the number 1240?

An unknown mass of silver is heated with 1240 J of energy and increases in temperature by 50°C, what is the mass of the silver? The specific heat of silver is 0.24 J/g°C

• Q

• m

• c

• T

Multiple Choice

What variable is the number 0.24?

An unknown mass of silver is heated with 1240 J of energy and increases in temperature by 50°C, what is the mass of the silver? The specific heat of silver is 0.24 J/g°C

• Q

• m

• c

• T

Multiple Choice

What variable is the number 50?

An unknown mass of silver is heated with 1240 J of energy and increases in temperature by 50°C, what is the mass of the silver? The specific heat of silver is 0.24 J/g°C

• ΔT

• T_final

• T_initial

• Q

Multiple Choice

What variable is the goal?

An unknown mass of silver is heated with 1240 J of energy and increases in temperature by 50°C, what is the mass of the silver? The specific heat of silver is 0.24 J/g°C

• Q

• m

• c

• T

Multiple Choice

Select the derived equation to solve for the goal?

An unknown mass of silver is heated with 1240 J of energy and increases in temperature by 50°C, what is the mass of the silver? The specific heat of silver is 0.24 J/g°C

• $$Q=mc\Delta T$$

• $$\Delta T=\frac{Q}{mc}$$

• $$m=\frac{Q}{c\Delta T}$$

• $$c=\frac{Q}{m\Delta T}$$

Multiple Choice

Solve:

An unknown mass of silver is heated with 1240 J of energy and increases in temperature by 50°C, what is the mass of the silver? The specific heat of silver is 0.24 J/g°C

• 15 000 g Ag

• 300 000 g Ag

• 6 g Ag

• 100 g Ag

Multiple Choice

What variable is the number 6500?

A substance with unknown specific heat and mass of 250 grams is heated with 6500 J of energy. If the initial temperature was 22°C and the final was 72°C. What is the specific heat of the substance?

• Q

• m

• c

• T

Multiple Choice

What variable is the number 250?

A substance with unknown specific heat and mass of 250 grams is heated with 6500 J of energy. If the initial temperature was 22°C and the final was 72°C. What is the specific heat of the substance?

• Q

• m

• c

• T

Multiple Choice

What variable is the number 72?

A substance with unknown specific heat and mass of 250 grams is heated with 6500 J of energy. If the initial temperature was 22°C and the final was 72°C. What is the specific heat of the substance?

• Q

• T_final

• T_initial

• ΔT

Multiple Choice

What variable is the number 22?

A substance with unknown specific heat and mass of 250 grams is heated with 6500 J of energy. If the initial temperature was 22°C and the final was 72°C. What is the specific heat of the substance?

• Q

• T_final

• T_initial

• ΔT

Multiple Choice

What variable is the goal?

A substance with unknown specific heat and mass of 250 grams is heated with 6500 J of energy. If the initial temperature was 22°C and the final was 72°C. What is the specific heat of the substance?

• Q

• m

• c

• T

Multiple Choice

Select the derived equation to solve for the goal?

A substance with unknown specific heat and mass of 250 grams is heated with 6500 J of energy. If the initial temperature was 22°C and the final was 72°C. What is the specific heat of the substance?

• $$Q=mc\Delta T$$

• $$c=\frac{\Delta T}{mQ}$$

• $$c=\frac{mQ}{\Delta T}$$

• $$c=\frac{Q}{m\Delta T}$$

Multiple Choice

Solve:

A substance with unknown specific heat and mass of 250 grams is heated with 6500 J of energy. If the initial temperature was 22°C and the final was 72°C. What is the specific heat of the substance?

• 0.52 J/g°C

• 0.52 cal/g°C

• 0.27 J/g°C

• 0.27 cal/g°C

Multiple Choice

What variable is the number 53?

An aqueous reaction releases 2000 J of energy into 53 grams of water at 22°C. What is the final temperature?

Assume the specific heat of solution is 4.18 J/g°C.

• Q

• m

• c

• T

Multiple Choice

What variable is the number 2000?

An aqueous reaction releases 2000 J of energy into 53 grams of water at 22°C. What is the final temperature?

Assume the specific heat of solution is 4.18 J/g°C.

• Q

• m

• c

• T

Multiple Choice

What variable is the number 4.18?

An aqueous reaction releases 2000 J of energy into 53 grams of water at 22°C. What is the final temperature?

Assume the specific heat of solution is 4.18 J/g°C.

• Q

• m

• c

• T

Multiple Choice

What variable is the number 22?

An aqueous reaction releases 2000 J of energy into 53 grams of water at 22°C. What is the final temperature?

Assume the specific heat of solution is 4.18 J/g°C.

• Q

• T_initial

• T_final

• ΔT

Multiple Choice

What variable is the goal?

An aqueous reaction releases 2000 J of energy into 53 grams of water at 22°C. What is the final temperature?

Assume the specific heat of solution is 4.18 J/g°C.

• Q

• T_initial

• T_final

• ΔT

Multiple Choice

Select the derived equation to solve for the goal?

An aqueous reaction releases 2000 J of energy into 53 grams of water at 22°C. What is the final temperature?

Assume the specific heat of solution is 4.18 J/g°C.

• $$T_f=\frac{Q}{mc}+T_i$$

• $$T_f=\frac{Q}{mc}-T_i$$

• $$T_f=\frac{Q}{mc-T_i}$$

• $$T_f=\frac{Q}{mc+T_i}$$

Multiple Choice

Solve:

An aqueous reaction releases 2000 J of energy into 53 grams of water at 22°C. What is the final temperature?

Assume the specific heat of solution is 4.18 J/g°C.

• 22°C

• 31°C

• 9°C

• 13°C

• 49°C