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Private Library
Empirical and Molecular Formula
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by Helen Wilson
| 5 Questions
Note from the author:
Empirical and Molecular Formula Formative
1
1 pt
Calculate the percent by mass of oxygen in calcium hydroxide.
2
1 pt
An unknown has an empirical formula of C2OH4 and a molar mass of 88.0 g/mole. What is the molecular formula of this compound?
3
1 pt
If a compound contains only 0.100 moles carbon and 0.300 moles hydrogen (no other elements), what is the empirical formula of the compound?
4
1 pt
State one example of a compound (ionic or covalent, your choice) whose IUPAC formula is both the empirical formula and the molecular formula. Be sure to explain your answer.
5
1 pt
A compound contains 53.4% carbon and 11.11% hydrogen, with the rest being oxygen. What is the empirical formula for the compound?