Gases questions | form five Chemistry
(4458) Question Category: Short answers Use the kinetic gas equation to explain the following concepts
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(4459) Question Category: Mathematical Calculation A flammable gas made up of only carbon and hydrogen is generated by certain anaerobic bacteria in sewage drains. A pure sample of a gas was found to effuse through a certain porous barriers in 1.50 minutes. Under the same conditions of temperature and pressure it takes 4.73 minutes for an equal volume of bromine gas to effuse through the same barrier . Calculate the molar mass of the unknown gas and suggest the name of the gas. (Molecular mass of Bromine is 159.8 g/m) Answer / Solution UNSOLVED |
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(4460) Question Category: Mathematical Calculation In the determination of the molecular weight of chloroform vapour by Hofmann`s method , the following results were obtained : Weight of liquid in bulb =0.2704 g, Volume of vapour =110 cm3 ; Temperature of vapour =99.6 °C; Atmospheric pressure =747 mmHg; Vapour pressure of water vapour at 99.6°C =285.2 mmHg. Calculate the the relative molecular weight of chloroform if 1 dm3 of H2 at S.T.P weighs 0.09 g. In your calculations, show your work clearly including manipulations of units. Answer / Solution UNSOLVED |
(6108) Question Category: Mathematical Calculation A 0.25 moles of air has entered a diesel engine at a pressure of 1.05x105 Pa and a temperature of 27oC. Assuming that air is ideal, calculate:
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(6109) Question Category: Mathematical Calculation A 42g of nitrogen gas and 8g of hydrogen gas are mixed in a 10 litre vessel at 20oC. Calculate the partial pressure of each gas and the total pressure of the gas mixture. Answer / Solution UNSOLVED |
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