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CBSE Class 11-science Answered

A sample of gases contains 10 ml CH4,20 ml C2H2 and 30 ml CO2 at constant temperature and pressure .What is the average molecular mass of sample?
Asked by vishakhachandan026 | 15 May, 2019, 10:37: AM
answered-by-expert Expert Answer
Average Molecular mass of mixture can be calculated by-
 
straight M subscript avg. equals fraction numerator straight M subscript 1 straight V subscript 1 plus straight M subscript 2 straight V subscript 2 plus straight M subscript 3 straight V subscript 3 over denominator straight V subscript 1 plus straight V subscript 2 plus straight V subscript 3 end fraction end subscript

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M1=Molar mass of CH4=16g
M2=Molar mass of C2H2=26g
M3=Mollar mass of CO2=44g
 
equals fraction numerator 16 cross times 10 plus 26 cross times 20 plus 44 cross times 30 over denominator 10 plus 20 plus 30 end fraction
equals 200 over 60
equals 33.3 g divided by m o l
 
Answered by Ravi | 15 May, 2019, 11:27: AM
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