We´re asked to determine the molar mass of lithium oxide (Li2O).
The molar mass of a compound is based on the atomic mass of the elements that constitute it.
To determine the formula weight, we do the following steps:
Step 1: determine the number of that atom in the formula (indicated as a subscript on the right side of the atom. Number 1 is omitted).
What is the molar mass of lithium oxide, Li2O?
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