Junior Class 1 Answered

Calculate the ratio of atoms present in 4g of Mg and 4g of iron

Asked by Vikas | 12 Feb, 2016, 06:27: PM

Expert Answer

$A t o m i c space m a s s space o f space M g space equals space 24.3 space g space equals space 1 space m o l e 4 space g space M g space equals space 0.165 space m o l e s 1 space m o l e space equals space 6.023 cross times 10 to the power of 23 space a t o m s 0.165 space m o l e s space M g space equals space 0.99 cross times 10 to the power of 23 space space end exponent M g space a t o m s A t o m i c space m a s s space o f space F e space equals space 55.8 space g equals 1 space m o l e 4 space g space F e space equals space 0.0717 space m o l e s 0.0717 space m o l e s space F e space equals space 0.43 cross times 10 to the power of 23 space F e space a t o m s fraction numerator M g space a t o m s space i n space 4 g space M g over denominator F e space a t o m s space i n space 4 g space F e end fraction space equals space fraction numerator 0.99 cross times 10 to the power of 23 over denominator 0.43 cross times 10 to the power of 23 end fraction equals bold 2 bold. bold 3$

Answered by | 12 Feb, 2016, 06:44: PM

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