Quantity of heat: It is necessary to determine the specific heat of an unknown object. The mass of the object is measured to be 199.0 g. It is determined experimentally that it takes 16.0 J to raise the temperature 10.0°C. Find the specific heat of the object. A) 8.04 J/kg ∙ K B) 1600 J/kg ∙ K C) 0.00120 J/kg ∙ K D) 3.18 × 10⁶ J/kg ∙ K

Question

Quizplus · Accepted Answer

The specific heat formula is:

Q = mcΔT

where:
Q = quantity of heat (16 J)
m = mass (199.0 g or 0.199 kg)
c = specific heat
ΔT = change in temperature (10.0°C)

Solving for c:

c = Q/mΔT
c = 16 J / (0.199 kg x 10.0°C)
c = 8.04 J/kg ∙ K

Therefore, the specific heat of the object is 8.04 J/kg ∙ K, which corresponds to choice letter A.

Quantity of Heat: It Is Necessary to Determine the Specific