CBSE Class 11-science Answered

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Asked by shivamkumarsawnaugadh | 17 Nov, 2021, 10:07: PM

Expert Answer

In 6 g of C-12 atoms,

N u m b e r space o f space m o l e s equals fraction numerator M a s s space i n space g over denominator M o l a r space M a s s end fraction equals 6 over 12 equals 0.5 space m o l e s N u m b e r space o f space C minus space a t o m s space i n space 0.5 space m o l e s equals 0.5 cross times 6.022 cross times 10 to the power of 23 equals 3.011 cross times 10 to the power of 23 space a t o m s left parenthesis 1 right parenthesis N u m b e r space o f space m o l e s space i n space 6 space g space o f space E t h a n e left parenthesis C subscript 2 H subscript 6 right parenthesis equals 6 over 30 equals 1 fifth N u m b e r space o f space t h e space E t h a n e space m o l e c u l e s equals 1 fifth cross times 6.022 cross times 10 to the power of 23 N u m b e r space o f space C space m o l e c u l e s space i n space 6 space g space E t h a n e equals 2 over 5 cross times 6.022 cross times 10 to the power of 23 left parenthesis 2 right parenthesis space N u m b e r space o f space m o l e s space i n space 8 space g space o f space m e t h a n e left parenthesis C H subscript 4 right parenthesis equals 8 over 16 equals 1 half N u m b e r space o f space m e t h a n e space m o l e c u l e s equals N u m b e r space o f space C space a t o m s equals space 1 half cross times 6.022 cross times 10 to the power of 23 equals 3.011 cross times 10 to the power of 23 space a t o m s left parenthesis 3 right parenthesis space N u m b e r space o f space m o l e s space o f space 21 space g space o f space p r o p a n e space left parenthesis C subscript 3 H subscript 8 right parenthesis equals 21 over 44 N u m b e r space o f space C space a t o m s equals 21 over 44 cross times 6.022 cross times 10 to the power of 23 left parenthesis 4 right parenthesis space N u m b e r space o f space m o l e s space o f space 28 space g space o f space C O equals 28 over 28 equals 1 space m o l e N u m b e r space o f space C space a t o m s equals 6.022 cross times 10 to the power of 23

Correct answer is option(2)

Answered by Ravi | 19 Nov, 2021, 12:06: PM

CBSE Class 11-science Answered

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CBSE Class 11-science Answered

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