Calculate moles from provided weight
4. Moles and Molarity 4.1) Moles 4.1.1) Moles - General
4.1.1.1) Moles - General Normal 1
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Calculate the number of moles of lithium carbonate present in 16.65 g of it. The molecular weight of lithium carbonate is 74 g/mol.
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lb equals 0.225 mol kg
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The molecular weight of lithium carbonate is 74 g/mol, which means `(74 \quad g)/(1 \quad mol)`. Therefore, using equation method we can write:
`(74 \quad g)/(1 \quad mol)=(16.65 \quad g)/x therefore x = 0.225` mol, Ans.
Using shortcut, the number of moles (`n`) is obtained by dividing gram amount of the substance with its molecular weight. Therefore,
`n=g/a=(16.65 \quad g)/(74 (g/(mol)))=0.225\quad mol` Ans.