How much energy is required to heat an iron nail with a mass of 25.5 grams from 65°C until it becomes red hot at 720°C?
(C for iron = 0.4494 J/g°C).
Part A: Enter the variable symbol for the quantity you need to find. Use your keyboard and the keypad to enter your answer. Then click Done.

to find the energy required to heat the iron nail, where Q is the heat energy required, m is the mass of the nail and Δθ is change in temperature and c is heat capacity of the iron nail.

Also, from the question,

[tex]m= 25.5g[/tex]

c = 0.4494J/g°C

Δθ=720 - 65 = 655°C

By substitution

[tex]Q =25.5 \times 0.4494 \times 655[/tex]

[tex]Q=7506.1035J[/tex]

Hence the energy required to heat the iron nail is 7506.1035J

How much energy is required to heat an iron nail with a mass of 25.5 grams from 65°C until it becomes red hot at 720°C? (C for iron = 0.4494 J/g°C). Part A: Enter the variable symbol for the quantity you need to find. Use your keyboard and the keypad to enter your answer. Then click Done.

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How much energy is required to heat an iron nail with a mass of 25.5 grams from 65°C until it becomes red hot at 720°C?
(C for iron = 0.4494 J/g°C).
Part A: Enter the variable symbol for the quantity you need to find. Use your keyboard and the keypad to enter your answer. Then click Done.