Here's how to calculate the molecular weights of carbon dioxide (CO2) and sugar (C12H22O11):

Carbon Dioxide (CO2)

* Carbon (C): 12.01 g/mol

* Oxygen (O): 16.00 g/mol

Calculation:

(12.01 g/mol) + (16.00 g/mol * 2) = 44.01 g/mol

Sugar (C12H22O11)

* Carbon (C): 12.01 g/mol

* Hydrogen (H): 1.01 g/mol

* Oxygen (O): 16.00 g/mol

Calculation:

(12.01 g/mol * 12) + (1.01 g/mol * 22) + (16.00 g/mol * 11) = 342.30 g/mol

Therefore:

* The molecular weight of carbon dioxide (CO2) is 44.01 g/mol.

* The molecular weight of sugar (C12H22O11) is 342.30 g/mol.