2c4h10+13o2 8co2+10h2o how many moles of co2 is produced when 76.9g o2 is consumed when butane is burned
how many moles of O2 in 76.9g?
8/13 that many moles of CO2
To find the number of moles of CO2 produced when 76.9 g of O2 is consumed during the burning of butane, we need to follow a step-by-step approach:
Step 1: Determine the molar mass of O2:
The molar mass of O2 is calculated by adding up the atomic masses of each oxygen atom (O):
Molar mass of O2 = 2 * atomic mass of O
= 2 * 16.00 g/mol (as the atomic mass of oxygen is approximately 16.00 g/mol)
= 32.00 g/mol
Step 2: Convert the given mass of O2 (76.9 grams) to moles:
Moles of O2 = Mass of O2 / Molar mass of O2
= 76.9 g / 32.00 g/mol
≈ 2.403 moles
Step 3: Use the balanced equation to determine the mole ratio of CO2 to O2:
According to the balanced equation, the mole ratio of CO2 to O2 is 8:13.
Step 4: Calculate the moles of CO2 produced:
Moles of CO2 = Moles of O2 * (Mole ratio of CO2 / Mole ratio of O2)
= 2.403 moles * (8/13)
≈ 1.473 moles
Therefore, approximately 1.473 moles of CO2 is produced when 76.9 g of O2 is consumed during the burning of butane.
To find the number of moles of CO2 produced when 76.9g of O2 is consumed during the combustion of butane (C4H10), you'll need to use the balanced chemical equation.
The balanced equation for the combustion of butane is:
2C4H10 + 13O2 → 8CO2 + 10H2O
From the equation, we can see that 13 moles of O2 are required to produce 8 moles of CO2.
1) Convert the mass of O2 given (76.9g) to moles:
To do this, we need to know the molar mass of O2 (2 oxygen atoms).
The molar mass of O2 is:
Molar mass (O2) = atomic mass(O) * 2 = 16.00 g/mol * 2 = 32.00 g/mol
Now, we can convert the mass to moles:
Number of moles of O2 = mass of O2 / molar mass of O2
Number of moles of O2 = 76.9g / 32.00 g/mol
2) Calculate the moles of CO2 produced using the mole ratio from the balanced equation:
From the balanced equation, we know that for every 13 moles of O2 consumed, 8 moles of CO2 are produced:
Number of moles of CO2 = (Number of moles of O2 / molar ratio) * coefficient of CO2
Number of moles of CO2 = (76.9g / 32.00 g/mol) * (8/13)
Now, you can calculate the value to find the number of moles of CO2 produced.
Note: Don't forget to cancel units and be careful with rounding off decimal values, if necessary.