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A gas consisting of only carbon and hydrogen has an empirical formula of CH2. The gas has a density of 1.65 g/L at 27°C and 734 mmHg. Determine the molar mass and molecular formula of the gas.
2
A compound has the empirical formula CHCl. A 256mL flask, at 373 K and 750. mmHg, contains 0.800 g of the gaseous compound. Give the molecular formula.
3
Silicon tetrachloride and trichlosilane (SiHCl3) are both starting materials for the production of electronicsgrade silicon. Calculate the densities of pure CCl4 and pure SiHCl3 vapor at 85°C and 758 mmHg.
4
Calculate the density of ammonia gas at 27°C and 635 mmHg.
5
What volume of air in liters at 35.0°C and 790 mmHg is required to completely combust 227 g of ethanol? Assume that air is 21.0 % oxygen gas by volume.
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What volume of air in liters at 35.0°C and 790 mmHg is required to completely combust 227 g of ethanol? Assume that air is 21.0 % oxygen gas by volume.
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