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Q.

If a 5 - star chocolate of 10 rupees, contains 3.42g of sugar, then the number of sugar molecules present in two five star chocolates is (molecular weight of sucrose is 342)

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a

12.046×1019

b

12..046 10 

c

12.046×1021

d

12.046×1020

answer is C.

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Detailed Solution

1Mole sugar =342g=6.023×1023 sugar molecules

3.42g =?sugar molecules

=3.42×6.023×1023342=6.023×1021 sugar molecules

Two five star chocolates having 12.046×1021 sugar molecules

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