100. cal of heat are added to 10 g of ethanol (0.581 cal/g °C) originally at 15 °C. The final temperature is ________.

Question

Quizplus · Accepted Answer

We can use the formula

Q = mcΔT

where Q is the heat transferred, m is the mass, c is the specific heat, and ΔT is the change in temperature.

Rearranging the formula to solve for ΔT, we get:

ΔT = Q/mc

Plugging in the given values, we get:

ΔT = 100 cal / (10 g * 0.581 cal/g °C) = 17.2 °C

Therefore, the final temperature is:

15 °C + 17.2 °C = 32.2 °C

Rounding to the nearest degree, the answer is C) 32 °C.

100 Cal of Heat Are Added to 10 G of Ethanol