Benzene is a starting material in the synthesis of nylon fibers and polystyrene (styrofoam).Its specific heat capacity is 1.74 J/(g·K).If 16.7 kJ of energy is absorbed by a 225-g sample of benzene at 20.0°C,what is its final temperature?

Question

Quizplus · Accepted Answer

We can use the equation Q = mcΔT, where Q is the energy absorbed, m is the mass of the substance, c is the specific heat capacity, and ΔT is the change in temperature.

Solving for ΔT, we get:

ΔT = Q / (mc)

Plugging in the values, we get:

ΔT = (16.7 kJ) / (225 g x 1.74 J/(g·K))

ΔT = 53.2 K

Therefore, the final temperature is:

20.0°C + 53.2°C = 73.2°C

The closest choice is D) 62.7°C, which is within 10 degrees of our calculated value.

Benzene Is a Starting Material in the Synthesis of Nylon