Combustion of a 0.2036 g sample produced 132.9 mL of CO2 at 25°C and 1.00 atm. and 0.122 g of water. Sample 2: 0.2500 g of glycine is treated in such a way that all the nitrogen atoms are converted to N2 gas. The volume of the nitrogen gas collected was 40.8 mL at 25°C and 1.00 atm. Determine: 1.        The percentages of carbon and hydrogen in glycine. 2.       The percentage of nitrogen in glycine. 3.       The percentage of oxygen in glycine. 4.       The empirical formula of glycine.

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.