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CBSE Class 11-science Answered

1.22 sum plz
question image
Asked by lovemaan5500 | 30 Jan, 2019, 08:29: PM
answered-by-expert Expert Answer
Given:
 
Aluminium oxide contains 52.90% Al
 
Therefore,
 
Oxygen = 100 - 52.9
 
            = 47.1 % 
 
Also,
 
CO2 contains 27.27%  C
 
Oxygen = 100 - 27.27 
 
            = 72.73 %
 
That is 72.73 g of oxygen combines with 27.27 g of C
 
 
therefore space 47.10 space straight g space of space Oxygen space will space combine space with space fraction numerator 47.1 cross times 27.27 over denominator 72.73 end fraction

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 space 17.66 space straight g space of space straight C

therefore The space ratio space of space masses space of space Al space and space straight C space which space combines space with space
space space space space space straight a space fixed space mass space comma space 47.10 space straight g space of space oxygen space is space space 52.9 space colon space 17.62 space which space is space 3 colon 1

So space the space mass space of space aluminium space carbide space is space space 17.62 plus space 52.90

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 space 70.52 space straight g

Now comma space 70.52 space straight g space of space aluminium space carbide space contains space 52.9 space straight g space of space Al

So comma space 100 space straight g space of space luminium space carbide space will space contain space space fraction numerator 100 cross times 52.9 over denominator 70.52 end fraction

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 space space space equals space 75.01 space straight g space of space Al

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 space space space space equals space 75.01 space percent sign space Al
 
The percentage of Al in aluminium carbide is 75.01%
Answered by Varsha | 31 Jan, 2019, 11:44: AM
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