How many calories are required to raise the temperature of a 35.0 g sample of iron from 25 °C to 35 °C? Iron has a specific heat of 0.108 cal/g °C.
A)38 cal
B)1.1 cal
C)3.8 cal
D)93 cal
E)130 cal

Question

Quizplus · Accepted Answer

The amount of heat (q) required to raise the temperature of a substance can be calculated using the formula q = mcΔT, where m is the mass of the substance, c is the specific heat capacity, and ΔT is the change in temperature. For this problem, m = 35.0 g, c = 0.108 cal/g°C, and ΔT = 35°C - 25°C = 10°C. Plugging these values into the formula gives q = 35.0 g * 0.108 cal/g°C * 10°C = 378 cal, which rounds to 38 cal.

How Many Calories Are Required to Raise the Temperature of a 35.0