It takes 11.2 kj of energy to raise the temperature of 145 g of benzene from 22.0°c to 67.0°c. what is the specific heat of benzene? it takes 11.2 kj of energy to raise the temperature of 145 g of benzene from 22.0°c to 67.0°c. what is the specific heat of benzene? 5.18 j / (g * °c) 3.48 j / (g * °c) 1.15 j / (g * °c) 1.72 j / (g * °c)

We can use the heat equation,

Q = mcΔT

where Q is the amount of energy transferred (J), m is the mass of the substance (kg), c is the specific heat (J g⁻¹ °C⁻¹) and ΔT is the temperature difference (°C).

Q = 11.2 kJ = 11200 J

m = 145 g

c = ?

ΔT = (67 - 22) °C = 45 °C

By applying the formula,

11200 J = 145 g x c x 45 °C

c = 1.72 J g⁻¹ °C⁻¹

Hence, specific heat of benzene is 1.72 J g⁻¹ °C⁻¹.