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Q.

Silicon dioxide, made up of elements silicon and oxygen, contains 46.7% by mass of silicon. With what mass of oxygen will 10 g of silicon combine?


 

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a

63 g

b

5.33 g

c

20 g

d

96 g

answer is B.

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Detailed Solution

Solution:

Concept: 100g of silicon dioxide contains 46.7 g of silicon or  100 – 46.7 ( i.e. 53.3 g) of oxygen.

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It means 10g of silicon will contain oxygen.

Hence 10 g of silicon combined with 5.33 g of oxygen.


 

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