How many mol of Oxygen are in 45.9 grams of CO2?
To determine the number of moles of oxygen in 45.9 grams of CO2, we need to follow these steps:
Step 1: Calculate the molar mass of CO2.
The molar mass of carbon (C) is 12.01 g/mol, and the molar mass of oxygen (O) is 16.00 g/mol. Since there are two oxygen atoms in one molecule of CO2, we can calculate the molar mass of CO2 as:
(12.01 g/mol of carbon) + (2 * 16.00 g/mol of oxygen) = 44.01 g/mol.
Step 2: Convert the given mass of CO2 to moles.
We can use the formula: moles = mass / molar mass.
moles = 45.9 g CO2 / 44.01 g/mol CO2 = 1.042 mol CO2.
Step 3: Determine the moles of oxygen.
Since there are two moles of oxygen in one mole of CO2, we can multiply the moles of CO2 by 2 to find the moles of oxygen:
moles of oxygen = 1.042 mol CO2 * 2 = 2.084 mol.
Therefore, there are approximately 2.084 moles of oxygen in 45.9 grams of CO2.
To determine the number of moles of oxygen in 45.9 grams of CO2, we need to use the molar mass and stoichiometry of CO2.
1. Start by writing the chemical formula of carbon dioxide (CO2).
- CO2 contains 1 carbon atom (C) and 2 oxygen atoms (O).
2. Look up the molar mass of CO2.
- The atomic mass of carbon (C) is approximately 12.01 g/mol.
- The atomic mass of oxygen (O) is approximately 16.00 g/mol. Since CO2 has two oxygen atoms, we multiply the atomic mass of oxygen by 2.
- So, the molar mass of CO2 = (12.01 g/mol) + 2(16.00 g/mol) = 44.01 g/mol.
3. Calculate the number of moles of CO2 using its molar mass and given mass.
- Moles of CO2 = Mass of CO2 / Molar mass of CO2
- Moles of CO2 = 45.9 g / 44.01 g/mol
- Moles of CO2 ≈ 1.043 mol
4. Finally, determine the number of moles of oxygen using the stoichiometry of CO2.
- From the balanced equation, we know that for every 1 molecule of CO2, there are 2 atoms of oxygen. So, the molar ratio of oxygen to CO2 is 2:1.
- Moles of oxygen = (Moles of CO2) x (2 moles of O / 1 mol of CO2)
- Moles of oxygen = 1.043 mol x 2
- Moles of oxygen ≈ 2.086 mol
Therefore, there are approximately 2.086 moles of oxygen in 45.9 grams of CO2.
45.9 mol of co2
I assume you mean how many moles of oxygen ATOMS are in .....
moles CO2 = grams CO2/molar mass CO2.
You see there are 2 oxygen atoms in a molecule of CO2; therefore, 2x moles CO2 will be moles oxygen atoms. If you meant how many moles of O2 MOLECULES are in ..., then 1/2 of the mols O atoms will be moles O molecules.