The molar specific heat of copper is 24.5 J/molK). The amount of heat needed to raise 126 g of copper by 2°C is

Question

Quizplus · Accepted Answer

First, we need to convert the mass of copper to moles:
126 g Cu x (1 mol Cu/63.55 g Cu) = 1.98 moles Cu

Next, we can use the formula: q = nCΔT
where q = amount of heat, n = number of moles, C = molar specific heat, and ΔT = change in temperature.

Substituting in the values we have:
q = (1.98 mol) x (24.5 J/molK) x (2°C) = 97.11 J

Rounding to the appropriate number of significant figures, we get:
q = 98 J

Therefore, the answer is D.

The Molar Specific Heat of Copper Is 24