1 answer:
Answer:
Explanation:
This is not the exact definition of a formula unit, but I think I know what is meant. You want the number of mols that 33.8 grams represents.
1 mol of SrF2
1 unit of Sr = 87.62
2 units of F = 19.00 * 2<u> = 38.00</u>
1 mol of SrF2 = 125.62
mols SrF2 = given mass / molar mass
given mass = 33.8
Molar mass = 125.62
mols = 33.8/125.62 = 0.269
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