CBSE Class 11-science Answered

1.19 sum plz

Asked by lovemaan5500 | 29 Jan, 2019, 01:51: PM

Expert Answer

In space the space first space step colon space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space Fe space space space plus space space space space straight S space space space space rightwards arrow with blank on top space space space space space space space space FeS Given space mass equals space space space 0.7 space straight g space space space space space space 0.4 space straight g space space space space space space space space space space space space space 1.1 space left parenthesis 0.7 space plus 0.4 right parenthesis......... according space to space law space of space conservation space of space mass Therefore comma percent sign space of space Fe space equals space fraction numerator 0.7 over denominator 1.1 end fraction cross times 100 space equals space 63.63 space percent sign

In space the space s e c o n d space step colon space space space space space space space space space space space space space space space space space space space space space space space space space space space space space Fe space space space space space space space space rightwards arrow with d i l u t e space H C l space plus space N a 2 straight S on top space space space space space FeS space downwards arrow Given space mass equals space space space space 2.8 space straight g space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space 4.4 space g Therefore comma percent sign space of space Fe space equals space fraction numerator 2.8 over denominator 4.4 end fraction cross times 100 space equals space 63.63 space percent sign

Hence the compositions of Fe is the same in both cases, which proves the law of constant proportions.

Answered by Ramandeep | 29 Jan, 2019, 05:02: PM

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