Q.

If a rocket runs on a fuel C15H30 and liquid oxygen, the weight of oxygen required and CO2 released for every litre of fuel respectively are: (Given: density of the fuel is 0.756 g/mL )

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a

1188 g and 1296 g

b

2376 g and 2592 g

c

2592g and 2376 g

d

3429 g and 3142 g

answer is C.

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Detailed Solution

C15H30+452O215CO2+15H2O  Mass of fuel =0.756×1000g  No. of moles of fuel =0.756×1000210   Wt. of oxygen =0.756×1000210×452×32=2592g;   Wt of CO2=0.756×1000210×15×44=2376g

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