Molecular formula of a compound and deduce from these data, Ask an Expert

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Molecular formula of a compound.

A compound of P and F was analyzed as follows: Heating 0.2324 g of the compound in a 378-cm cubed container turned all of it to gas, which had a pressure of 97.3 mmHg at 77 degrees C. Then the gas was mixed with calcium chloride solution, which turned all of the F to 0.2631 g of CaF2. Determine the molecular formula of the compound.

Identify the unknown metal.

A quanity of 0.225 g of a metal M ( molar mass = 27.0 g/mol ) liberated 0.303 L of molecular hydrogen (measured at 17 degrees C and 741 mmHg) from an excess of hydrochloric acid. Deduce from these data the corresponding equation and write formulas for the oxide and sulfate of M .

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Category:- Chemistry
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