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1. What do you understand by area? State its SI unit. |
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Answer» Explanation: The MOLAR mass of ethanoic acid is 2(12)+2(16)+4(1)=60 g/mol. The mass of ethanoic acid is divided with molar mass of ethanoic acid to obtain number of moles of ethanoic acid. Number of moles of ethanoic acid = 60g/mol 2.5g =0.04167mol The mass of benzene is 75 grams or 1000 75 =0.075 kg. The molality of ethanoic acid in benzene is the ratio of the number of moles of ethanoic acid to the mass of benzene (in kg). It is 0.075kg 0.04167mol =0.556m |
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