Stoichiometry
At what temperature, given mass of a gas that occupies a volume of 2 litres at N.T.P. will occupy a volume of 4 litres, if the pressure of the gas is kept constant?

100°C
200°C
273°K
273°C

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Stoichiometry
A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the

Atomic weight of the metal is 4
Equivalent weight of the metal is 8
Equivalent weight of the metal is 4
Atomic weight of the metal is 2

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