Question

Calculate the energy required to heat 331.0 mg of mercury from 6.3 degrees Celsius to 17.6 degrees Celsius. Assume the specific heat capacity of mercury under these conditions is 0.139Jg-1K-1. Round your answer to 3 significant digits.

Answer 1

The energy required to heat 331.0 mg of mercury from 6.3 degrees Celsius to 17.6 degrees Celsius is 0.525 J.

Step-by-step explanation:

To calculate the energy required to heat the mercury, we can use the formula Q = mcΔT, where Q is the energy, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature. We are given the mass of mercury as 331.0 mg (or 0.331 g), the specific heat capacity of mercury as 0.139 J/g °C, and the change in temperature as 17.6 - 6.3 = 11.3 °C. Plugging in these values, we get:

Q = (0.331 g)(0.139 J/g °C)(11.3 °C) = 0.525 J

Rounding to 3 significant digits, the energy required to heat the mercury from 6.3 °C to 17.6 °C is 0.525 J.