How many calories are required to raise the temperature of a 150.g sample of gold from 25 °C to 175 °C? The specific heat of gold is 0.0308 cal/g °C.
A)4.62 cal
B)116 cal
C)22500 cal
D)693 cal
E)130.cal

Question

Quizplus · Accepted Answer

The amount of calories required can be calculated using the formula: $q = mc\Delta T$, where $q$ is the heat energy, $m$ is the mass of the substance, $c$ is the specific heat capacity, and $\Delta T$ is the change in temperature. Plugging in the given values: $q = 150 \, \text{g} \times 0.0308 \, \text{cal/g}^\circ\text{C} \times (175^\circ\text{C} - 25^\circ\text{C}) = 150 \times 0.0308 \times 150 = 693 \, \text{cal}$.

How Many Calories Are Required to Raise the Temperature of a 150.g