C3H8 + 5O2 → 3CO2 + 4H2O
How many grams of carbon dioxide are produced
42
56
To calculate the mass of carbon dioxide produced, you need to know the stoichiometric coefficients of the reaction. In this case, the stoichiometric coefficient of CO2 is 3, which means that for every 3 moles of propane (C3H8) reacted, 3 moles of CO2 are produced.
To find the mass of CO2 produced, you need to follow these steps:
1. Determine the molar mass of CO2 (carbon dioxide). The atomic masses of carbon (C) and oxygen (O) are approximately 12.01 g/mol and 16.00 g/mol, respectively. The molar mass of CO2 is therefore calculated as follows:
Molar mass of CO2 = (2 x Molar mass of O) + Molar mass of C = (2 x 16.00 g/mol) + 12.01 g/mol = 44.01 g/mol.
2. Convert the given mass of C3H8 to moles using its molar mass. The molar mass of C3H8 is calculated as follows:
Molar mass of C3H8 = (8 x Molar mass of H) + (3 x Molar mass of C) = (8 x 1.01 g/mol) + (3 x 12.01 g/mol) = 44.11 g/mol (approximately).
Divide the given mass (if provided) of C3H8 by its molar mass to obtain the moles of C3H8.
3. Use the stoichiometry between C3H8 and CO2 to calculate the moles of CO2 produced. According to the balanced equation, for every 3 moles of C3H8, 3 moles of CO2 are produced.
4. Multiply the moles of CO2 by the molar mass of CO2 to convert moles to grams. The mass of CO2 is calculated by using the formula:
Mass of CO2 = Moles of CO2 x Molar mass of CO2.
By following these steps, you can find the mass of carbon dioxide produced in the given reaction.