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CBSE Class 11-science Answered

Vitamins C is essential fot prevention of scurvy combustion of 0.9g of vitamins C givez 0.2998g of Co2and 0.819g of H2OWhat is empirical formula of Vitamin C
Asked by jkatwara | 14 Oct, 2019, 12:21: PM
answered-by-expert Expert Answer
Mass of H2O should be 0.0819 g
Suppose vitamin is X.
straight X space space space space space space plus thin space space space space straight O subscript 2 space rightwards arrow CO subscript 2 space space space plus space space space straight H subscript 2 straight O 0.200 space space space space space space space space space space space space space space space space 0.2998 space space space space space 0.0819 Molar space mass space of space CO subscript 2 space end subscript space equals 12 plus 2 cross times 16 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 equals 44 space straight g Amount space of space Carbon space in space 44 space straight g space of space CO subscript 2 equals 12 space straight g Amount space of space Carbon space in space 0.2998 space straight g space CO subscript 2 equals 12 over 44 cross times 0.2998 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 space space space space space space space space space space space space space space space space equals 0.0818 space straight g Molar space mass space of space straight H subscript 2 straight O space equals 18 space straight g Amount space of space hydrogen space in space 18 straight g space straight H subscript 2 straight O equals 2 space straight g Ammount space of space carbon space in space 0.0819 space straight g space straight H subscript 2 space straight O space equals 2 over 18 cross times 0.0819 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 space space space space space space space space space space space space space space space space space space space space space space equals 0.0091 space straight g percent sign space of space Carbon equals fraction numerator 0.0818 over denominator 0.2000 end fraction cross times 100 equals 40.9 percent sign percent sign space of space hydrogen equals fraction numerator 0.0091 over denominator 0.200 end fraction cross times 100 equals 4.55 percent sign percent sign space of space straight O equals 100 minus left parenthesis 40.9 plus 4.55 right parenthesis space space space space space space space space space space space space space space space equals 54.55 percent sign straight C space space space space space space space space space space space space space space space straight H space space space space space space space space space space space space space space space space space space space space straight O 40.9 space space space space space space space space 4.55 space space space space space space space space space space space space space 54.55 fraction numerator 40.9 over denominator 12 end fraction space space space space space space space space fraction numerator 4.55 space space over denominator 1 end fraction space space space space space space space space space space space space space fraction numerator 54.55 over denominator 16 end fraction space space space space 3.408 space space space space space space space space space space space 4.55 space space space space space space space space space space space space space space space 3.41 space space space space space space After space dividing space by space 3.4 1 space space space space space space space space space space space space space space space space 1.33 space space space space space space space space space space space space space space space space space space space space space space space 1 1 cross times 3 space space space space space space space space space 1.33 cross times 3 space space space space space space space space space space space space space space space space space space 1 space cross times 3 space space space space space space space space space space space space space space space space space space space space 3 space space space space space space space space space space space space space space space space space space space 4 space space space space space space space space space space space space space space space space 3 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 Vitamin space straight X space will space be minus space straight C subscript 3 straight H subscript 4 straight O subscript 3
 
Answered by Ravi | 15 Oct, 2019, 03:16: PM

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CBSE 11-science - Chemistry
In this, if the options weren't there, couldn't it have been YX 2  (2 in subscript)
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Asked by drhimasingh | 22 May, 2020, 11:39: AM
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CBSE 11-science - Chemistry
2g Feso4 is completely oxidised by 0.05M kmno4.what volume of kmno4 is required？
Asked by nareshrajpurohit43109 | 22 May, 2020, 11:18: AM
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CBSE 11-science - Chemistry
Please solve the qustion in the attachment
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Asked by d6knx7qmw1 | 15 May, 2020, 10:37: PM
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CBSE 11-science - Chemistry
Sir Q.no 3
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Asked by sahadipa1975 | 02 May, 2020, 08:53: AM
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CBSE 11-science - Chemistry
what is the mole fraction of alcohol in 10% of alcohol w/w in water ?
Asked by abhishek19362771 | 08 Apr, 2020, 03:48: PM
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CBSE 11-science - Chemistry
ans with solutions
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Asked by anilsolanki2060 | 22 Feb, 2020, 10:12: AM
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CBSE 11-science - Chemistry
Q.no 3 =the relative abundance of various isotopes of silicon is as Si-28=92.23%, Si-29=4.67% & Si-30=3.10%. what is the average atomic mass of silicon.
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Asked by pujakurmi22 | 11 Nov, 2019, 10:59: PM
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CBSE 11-science - Chemistry
Vitamins C is essential fot prevention of scurvy combustion of 0.9g of vitamins C givez 0.2998g of Co2and 0.819g of H2OWhat is empirical formula of Vitamin C
Asked by jkatwara | 14 Oct, 2019, 12:21: PM
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CBSE 11-science - Chemistry
 A compound of lead has the following percentage composition: Pb = 90.66%, O = 9.34%. Calculate the empirical formula of the compound.(Pb =207,O=16 )
Asked by vikas.kochhar6 | 30 Aug, 2019, 03:58: PM
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CBSE 11-science - Chemistry
2 L of NH3 at 273K and 1 ATM pressure neutralised 134ml of a solution of H2SO4.What is the normality of the acid?
Asked by pb_ckt | 19 May, 2019, 11:56: PM
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