# Calculate the amount of heat required to completely sublime 71.0g of solid dry ice (CO2) at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol.

## To calculate the amount of heat required to sublime solid dry ice (CO2), you can use the following steps:

1. Find the molar mass of carbon dioxide (CO2). The atomic mass of carbon is 12.01 g/mol, and the atomic mass of oxygen is 16.00 g/mol. Therefore, the molar mass of CO2 is 12.01 g/mol + (2 × 16.00 g/mol) = 44.01 g/mol.

2. Convert the given mass of dry ice (71.0g) into moles by dividing it by the molar mass of carbon dioxide.

Moles of CO2 = 71.0 g / 44.01 g/mol

3. Calculate the heat required for sublimation using the molar heat of sublimation for carbon dioxide (32.3 kJ/mol) and the number of moles of CO2.

Heat required = moles of CO2 × molar heat of sublimation

Heat required = (71.0 g / 44.01 g/mol) × 32.3 kJ/mol

4. Solve for the heat required.

Please note that the given heat of sublimation is given in kilojoules per mole (kJ/mol), and the mass of dry ice is given in grams (g). Therefore, the resulting heat required will be in kilojoules (kJ).