The specific heat of iron is 0.11 cal/goC. A cafeteria fork made of iron has a mass of 20 grams. How much heat energy is needed to raise the temperature of this form from 25oC to 75oC?

0.044 calories

0.275 calories

110 calories

9090.9 calories

Question

Physics

Paulina Franco

14 July, 12:33

The specific heat of iron is 0.11 cal/goC. A cafeteria fork made of iron has a mass of 20 grams. How much heat energy is needed to raise the temperature of this form from 25oC to 75oC?

0.044 calories

0.275 calories

110 calories

9090.9 calories

+2

Answers (1)

Know the Answer?

Demarcus Chang · Answer 1

The formula q=mcΔT describes this problem.

q is energy, m is mass, c is specific heat capacity and ΔT is change in temperature (final-initial)

q = 20 g * 0.11 J/g °C * (75 °C-25 °C)

q = 110 J

The specific heat of iron is 0.11 cal/goC. A cafeteria fork made of iron has a mass of 20 grams. How much heat energy is needed to raise the temperature of this form from 25oC to 75oC?0.044 calories0.275 calories110 calories9090.9 calories

The specific heat of iron is 0.11 cal/goC. A cafeteria fork made of iron has a mass of 20 grams. How much heat energy is needed to raise the temperature of this form from 25oC to 75oC?

0.044 calories

0.275 calories

110 calories

9090.9 calories