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Molarity

(3) 16 564. A...

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(3) 16 564. A mixture of A (molar mass 16) and B (molar mass =32) has a vapour density 10. The mole percentage ofB in the mixture is(1) 25(2) 75(3) 50(4) 40

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Q. The vapour density of a mixture of gas

A

(molecular mass =

40

B

(molecular mass =

80

25

. Then, mole percentage of gas

B

in the mixture would be :

3 : 2

molar ratio mixture of

F e O

F e_{2} O_{3}

react with oxygen to produce a

2 : 3

molar ratio mixture of

F e O

F e_{2} O_{3}

. Find the mass (in g) of

O_{2}

gas required per mole of the initial mixture.

1

N_{2}, N O_{2}

N_{2} O_{4}

has a mean molar mass of

55.4

. On heating to a temperature at which all the

N_{2} O_{4}

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N_{2} O_{4} \to 2 N O_{2}

The mean molar mass of mixture becomes

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. The molar ratio of

N O_{2}

in the original mixture is :

Q. One mole of a mixture of

N_{2}, N O_{2}

N_{2} O_{4}

has a mean molar mass of

55.4.

On heating to a temperature at which

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is completely dissociated:

N_{2} O_{4} \to 2 N O_{2}

, the mean molar mass tends to a lower value of

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in the original mixture?

Q. A mixture of methane and ethane in the molar ratio of

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