Molar mass of calcium oxide
56.08 g/molCaO
Molar mass
Molar mass. The mass of one mole in grams: add the atomic mass of every atom in the formula. Masses. Standard atomic masses to two decimals, hydrogen 1.008, every element to uranium. Typing. Ca(OH)2, (NH4)2SO4, CuSO4.5H2O and K4[Fe(CN)6] all work.
56.08g/mol
CaO
- Ca× 171.47%
- O× 128.53%
- Ca1 × 40.0840.08
- O1 × 16.0016.00
- Total56.08 g/mol
Grams, moles, particles
Type any one. The other three fill in. Moles. From grams, particles or litres they are rounded to 3 significant figures first, as in a worked answer. 1 mol = 6.022 × 10²³ particles = 22.7 L of gas at STP (1 bar); 22.4 L at 1 atm.
1 mol of CaO = 6.022 × 10²³ formula units
At 1 atm (older value): 22.40 L
Add up the atoms
- Calcium: 1 × 40.08 = 40.08 g
- Oxygen: 1 × 16.00 = 16.00 g
- Molar mass = 40.08 + 16.00 = 56.08 g/mol
Share of the mass
- Calcium71.47%
- Oxygen28.53%
1 mol of CaO = 56.08 g
1 g of CaO = 0.01783 mol
Molar mass of calcium oxide: quick answers
What is the molar mass of calcium oxide?
The molar mass of calcium oxide, CaO, is 56.08 g/mol. So 1 mol of calcium oxide has a mass of 56.08 g.
How do you calculate the molar mass of CaO?
Add the atomic masses of all the atoms: 40.08 + 16.00 = 56.08 g/mol.
What is the percentage of calcium in calcium oxide?
Calcium is 71.47% of the mass of CaO: 40.08 g in every 56.08 g. In full: Ca 71.47%, O 28.53%.