The specific heat of iron is 0.11 cal /g·°C. What will be the final temperature if 275 calories are added to a 75.0 g piece of iron initially at 25°C?
A) 33°C
B) 36°C
C) 58°C
D) none of these

Question

Quizplus · Accepted Answer

We can use the formula Q = mcΔT, where Q is the heat added, m is the mass of the substance, c is the specific heat, and ΔT is the change in temperature. 
Rearranging the formula, we get ΔT = Q / (mc)
Plugging in the values, we get:
ΔT = 275 cal / (75.0 g x 0.11 cal /g·°C)
ΔT = 33°C
Therefore, the final temperature will be 25°C plus the change in temperature, which is:
Final temperature = 25°C + 33°C = 58°C
Thus, the correct choice is C.

The Specific Heat of Iron Is 0