Moles
What is a mole?
Defined as 6.02214076 × 1023 of some chemical unit, be it atoms, molecules, ions, or others.
What is molar mass?
Mass in grams of one mole of a substance.
What is the number of particles?
The number of constituent particles in that system.
How many moles of lithium (Li) are in 1 mole of lithium hydride (LiH)?
1 mole of lithium
Calculate the molar mass of CuSO4.
159.5 g/mol
How many particles of any systems is in 1 mol?
6.022 × 10^23 particles.
How many moles of oxygen (O) are in 1 mole of calcium carbonate (CaCO3)?
3 moles of oxygen
Calculate the molar mass of CaCOH.
69.09 g/mol
How many atoms are in 50g of calcium?
7.5 x 10^23 atoms
What is the mass of 1 mol in carbon-12 in grams?
12
Calculate the molar mass of Cr4(P2O7)3.
729.8 g/mol
How many atoms are in 1 mole of H2?
1.2044 x 10^24
How many atoms of hydrogen are in 1 mole of water (H20)?
1.20 x 1024 atoms of hydrogen
Calculate the molar mass of RbOH·2H2O.
138.47 g/mol
How many atoms are there in 47.5g of boron?
2.65 x 10^24 atoms