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Problem- 1 What is the molecular formula of the molecule that has an empirical formula of CH20 and a molar mass of 120.1 g/mol?

2. What is the molecular formula of the molecule that has an empirical formula of CH@C1 and a molar mass of 247.5 g/mol?

3. The empirical formula of a compound is found to be P205. Experiments show that the molar mass of the compound is 283.9 g/mol. What is the molecular formula of the compound?

4. A compound has the following % composition 76.54% C, 12.13% H and 11.33% O. If its molar mass is 282.5 g/mol, what is its molecular formula?

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