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For his 18th birthday in February Peter plants to turn a hut in the garden of his parents into a swimming pool with an artifical beach. In order to estimate the consts for heating the water and the house , peter obtains the data for the natural gas combustion and its price. The desity of natural gas is 0.740 g L^(-1) (1.013 xx 10^(5)Pa, 25^(@)C)specified by PUC , the public utility company. (a) Calculate the amount of methane and ethane (in moles) in 1.00m^(3) of natural gas (natural gas, methane and ethane are not ideal gases). (b) Calculate the combustion energy which is released as thermal energy during the buring of 1.00 m^(3) of natural gas under standard conditions assuming that all products are gaseous .(if you do not have the amount from 1.2 a) assume that 1.00 m^(3) natural gas corresponds to 40.00 mol natural gas) According to the PUC the combustion energy will be 9.981K Wh per m^(3) of natural gas if all products are gaseous . How large is the deviation (in percent) from the value you obtainedin b? The swimming pool inside the house is 3.00 m wide ,5.00 m long and 1.50 m deep (below the floor) . The tap water temperature is 8.00^(@)C and the air temperature in the house(dimensions given in the figure) is 10.0^(@)C. Assuming a water density of rho=1.00 Kg L^(-1) and air behaving like an ideal gas. |
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