# H.W. Empirical Formulas ```H.W. Empirical Formula Calculations
* Required
1.
2.
An oxide of chromium is found to have the following percent composition:
68.4% Cr and 31.6% O. Determine this compound's empirical formula. *
2 points
3.
The percent composition of a compound was found to be 63.5% silver, 8.2%
nitrogen, and 28.3% oxygen. Determine the compound's empirical formula. *
2 points
4.
What is the empirical formula for the compound C₁₈H₃₆O9? *
2 points
5.
A compound containing 5.9265% H and 94.0735% O has a molar mass of
34.01468 g/mol. Determine the molecular formula of this compound. *
2 points
6.
Determine the molecular formula of the compound with an empirical formula
of CH and a molar mass of 78.110 g/mol. *
2 points
7.
If the empirical formula of a compound is P₂O₅ and experimentation shows
that the molar mass of this compound is 283.89 g/mol, what is the
compound's molecular formula? *
2 points
8.
What is the empirical formula for C₆H12O₆? *
2 points
9.
What is the empirical formula for C3H8N2O? *
2 points
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