A 3.50 g sample of rice was burned in a bomb calorimeter containing 1980 g of water. The temperature of the water increased from 22.75°C to 28.88°C. How much heat, in joules, did the rice sample release when it burned? [C_water = 4.184 J/(g°C)]

Question

Quizplus · Accepted Answer

The heat released by the rice sample can be calculated using the formula $q = mc\Delta T$, where $m$ is the mass of the water (1980 g), $c$ is the specific heat capacity of water (4.184 J/(g°C)), and $\Delta T$ is the change in temperature (28.88°C - 22.75°C = 6.13°C). Thus, $q = 1980 \times 4.184 \times 6.13 = 50800 J$ or $5.08 \times 10^4 J$.

A 350 G Sample of Rice Was Burned in a Bomb