Question

calculate the number of moles 5.6 litre of oxygen​

Answer 1

at STP 1 mole gas has volume of 22.4

liter so 5.6 liter CO2 is 5.6/22.4 = 0.25

mole CO2

This contains 2 x 0.25 = 0.5 mole

oxygen atoms

Now 3 mole O atoms are contained in 1

mole SO3 or

1 mole O atoms in 1/3 mole SO3 so 0.5

mole O atoms in 0.5/3 = 0.17 mole SO3

S is 32; O is 16 so 1 mole SO3 is 80

gram

Answer 0.17 x 80 = 13.6 gram SO3

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Answer 2

Answer:

at STP 1 mole gas has volume of 22.4

liter so 5.6 liter CO2 is 5.6/22.4 = 0.25

mole CO2

This contains 2 x 0.25 = 0.5 mole

oxygen atoms

Now 3 mole O atoms are contained in 1 mole SO3 or

1 mole O atoms in 1/3 mole SO3 so 0.5

mole O atoms in 0.5/3 = 0.17 mole SO3

S is 32; O is 16 so 1 mole SO3 is 80

gram

Answer 0.17 x 80 = 13.6 gram SO3

4G 65

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