Molar Mass and Mole Calculations. Molar Mass. Molar mass is the mass in grams of one mole of particles (atoms, ions, molecules, formula units). Equal to the numerical value of the average atomic mass (get from periodic table) 1 mole of C atoms = 12.0 g 1 mole of Mg atoms = 24.3 g
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1 mole of C atoms = 12.0 g
1 mole of Mg atoms = 24.3 g
1 mole of Cu atoms = 63.5 g
Chlorine has an atomic mass of 35.453 amu.
So what is its molar mass?
35.453 grams per mole
The number is the same, just change the unit.
In one mole of Aluminum Bromide, there is 1 mole of aluminum atoms and 3 moles of bromine atoms.
1 mol Al x 26.9815 g/mol Al = 26.9815 g Al
3 mol Br x 79.904 g/mol Br = 239.712 g Br
26.9815 g Al + 239.712 g Br = 266.6935 g AlBr3 per moleor 266.6935 g/mol AlBr3
Where, n is the # of moles (mol)
m is the mass (g)
M is the molar mass (g/mol)