Question

Calculate the amount of heat required to completely sublime 66.0 gg of solid dry ice (CO2)(CO2) at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/molkJ/mol. Express your answer in kilojoules. nothing kJkJ

Answer 1

Answer:

48.5 kJ

Explanation:

Let's consider the sublimation of carbon dioxide at its sublimation temperature, that is, its change from the solid to the gaseous state.

CO₂(s) → CO₂(g)

The molar mass of carbon dioxide is 44.01 g/mol. The moles corresponding to  66.0 g are:

66.0 g × (1 mol/44.01 g) = 1.50 mol

The heat of sublimation for carbon dioxide is 32.3 kJ/mol. The heat required to sublimate 1.50 moles of carbon dioxide is:

1.50 mol × (32.3 kJ/mol) = 48.5 kJ