Calculate the following for caffeine:

Molecular weight (in g/gmol) based on its molecular formula, C₈H₁₀O₂N₄.

The milligrams (mg) of caffeine that can be consumed per day if the safe level for healthy adults is 2.06 x 10^-3gmol.

Number of cups of coffee that can be consumed safely if 100 mg of caffeine in each cup of coffee.

A gaseous mixture contains 45.0 g of N₂, 250.0 g of O₂, and 0.125 kg of CO₂. Calculate the

average molecular weight of the mixture. Is your result reasonable? Explain.