Question

Calculate the mass in kg of 4.48 dm$^3$ carbon dioxide at STP.

• A. 2.2 $\times$ 10$^{-3}$ kg
• B. 4.4 $\times$ 10$^{-3}$ kg
• C. 6.6 $\times$ 10$^{-3}$ kg
• D. 8.8 $\times$ 10$^{-3}$ kg

Hint:

To calculate the mass of a gas, first calculate the moles using the molar volume at STP, then multiply by the molar mass. Don't forget to convert grams to kilograms if needed.