Question

25.0 g of mercury is heated from 25 oC to 155 oC, absorbing 455 joules of heat in the process. Calculate the specific heat capacity of mercury

a.0.140
b.0.141
c.0.142
d.0.143

Answer 1

The specific heat capacity of mercury is approximately 0.140 J/g °C.

Step-by-step explanation:

The specific heat capacity of a substance is the amount of heat energy required to raise the temperature of 1 gram of the substance by 1 degree Celsius. To calculate the specific heat capacity of mercury in this case, we can use the formula:

Heat (Joules) = mass (g) * specific heat capacity (J/g °C) * change in temperature (°C)

Given:

Mass of mercury = 25.0 g

Change in temperature = 155 °C - 25 °C = 130 °C

Heat absorbed = 455 J

Plugging in these values into the formula, we can solve for the specific heat capacity:

455 J = 25.0 g * specific heat capacity * 130 °C

Specific heat capacity = 455 J / (25.0 g * 130 °C) ≈ 0.140 J/g °C

Therefore, the specific heat capacity of mercury in this case is approximately 0.140 J/g °C.