The specific heat of copper is 0.092 cal/g·°C. How much energy is required to heat 40.0 grams of copper from 25.0°C to 75.0°C?

Question

Quizplus · Accepted Answer

The formula for calculating the energy needed to heat a substance is:

Q = m * c * ΔT

Where Q is the energy, m is the mass, c is the specific heat, and ΔT is the change in temperature.

Substituting the given values:

Q = 40.0 g * 0.092 cal/g·°C * (75.0°C - 25.0°C)

Q = 40.0 g * 0.092 cal/g·°C * 50.0°C

Q = 184 cal

Therefore, the best choice is B.

The Specific Heat of Copper Is 0