d. How many moles of O2 are needed to produce 7.48g of CO2?
how many moles in 7.48g of CO2 ?
It will take that many moles of O2
We need to be careful with problems like this. For example we need to know from what the CO2 is obtained.
In this problem, mols CO2 = 7.48/44 = 0.17
If we assume the CO2 is produced from
C + O2 ==> CO2, then 0.17 mols CO2 will require 0.17 mols O2.
But if the CO2 is produced from CO, then
2CO + O2 ==> 2CO2
0.17 mols CO2 will require 1/2 * 0.17 mols O2.
And if CO2 is produced from some other reaction we can get other answers.
To determine the number of moles of O2 needed to produce 7.48g of CO2, we need to follow a series of steps:
Step 1: Determine the molar mass of CO2.
The molar mass of carbon dioxide (CO2) is calculated by adding the atomic masses of carbon (C) and two oxygen (O) atoms.
Atomic mass of C = 12.01 g/mol
Atomic mass of O = 16.00 g/mol
Molar mass of CO2 = (12.01 g/mol) + 2 * (16.00 g/mol) = 44.01 g/mol
Step 2: Calculate the number of moles of CO2.
To find the number of moles of CO2, we will use the formula:
Number of moles = Mass / Molar mass
In this case, the mass is 7.48g and the molar mass of CO2 is 44.01 g/mol. Putting the values into the formula:
Number of moles = 7.48g / 44.01 g/mol = 0.1699 mol (rounded to four decimal places)
Step 3: Determine the mole ratio between O2 and CO2.
According to the balanced chemical equation, the mole ratio between O2 and CO2 is 2:2. This means that for every 2 moles of CO2 produced, 2 moles of O2 are needed.
Step 4: Calculate the number of moles of O2.
Using the mole ratio, we can determine the moles of O2 needed. Since the mole ratio is 2:2, the number of moles of O2 required will be the same as the number of moles of CO2.
Therefore, the number of moles of O2 needed is 0.1699 mol.
So, 0.1699 moles of O2 are needed to produce 7.48g of CO2.