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A person requires 2870kcal of energy to ...

A person requires `2870kcal` of energy to lead normal daily life. If heat of combustion of cane sugar is `-1349kcal`, then his daily comsumption of sugar is `:`

A

728 g

B

0.728 g

C

342 g

D

0.342 g

Text Solution

Verified by Experts

The correct Answer is:
A
Cane sugar `rarr C_(12)H_(22)O_(11)`
Molar mass of cane sugar = `342 g//mol`
`C_(12)H_(22)O_(11) + 35/2 O_(2) rarr 12CO_(2) + 11H_2O`
1349 kcal energy acquire by `rarr` 342 g of cane sugar
2870 Kcal energy acquire by `rarr` 342/1349 xx 2870 = 727.6 g`.
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