The molar heat capacity, C_m of gold (Au(s)) is 25.4 J K^-1 mol^-1. Calculate the energy (in J) required to heat a 100 g bar of gold from 25 °C to 75 °C?

Question

Quizplus · Accepted Answer

The energy required can be calculated using the formula q = m * C * ΔT. First, convert the mass of gold to moles (100 g / 197 g/mol = 0.5076 mol). Then, use the formula: q = 0.5076 mol * 25.4 J/mol*K * (75°C - 25°C) = 645 J.

The Molar Heat Capacity, Cm of Gold (Au(s)) Is 25

The Molar Heat Capacity, C_m of Gold (Au(s)) Is 25