Determine the numbers of molecules remain un-reacted
Starting with 1.00 ´ 10 20molecules of reactant at time t = 0, a first-order reaction has a half-life of 20.0 minutes. Determine the numbers of molecules remain un-reacted after the 100.0 minutes?
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A thermos is a container with vacuum among its inner and outer walls. Describe why removing air among the walls reduces the heat exchange between the contents of the thermos and surroundings.
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If this energy is derived from the combustion of methane (CH4) at standard conditions (25oC and 1 atm), the heat of combustion of methane is 889.967 kJ/mol and the density of methane is 0.0680kg/m3.
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Write down a stepwise equation for these reactions when the triphenylmethanol can also be prepared from the reaction of ethyl benzoate with phenyl magnesium bromide and by the reaction of diethyl carbonate (C2H5Odouble bonded to a COC2H5) with ph
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