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Stoichiometry

Stoichiometry
__________ kg of CaCO₃ on heating will give 56 kg of CaO.

144
1000
100
56

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Stoichiometry
The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes. This is the __________ law.

Amgat's
Avogadro's
GayLussac's
Dalton's

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Stoichiometry
Assuming that CO₂ obeys perfect gas law, calculate the density of CO₂ (in kg/m³) at 263°C and 2 atm.

4
1
2
3

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Stoichiometry
The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg.?

0.4
0.6
0.1
0.2

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Stoichiometry
The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be

M/4
M/2
M
2M

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Stoichiometry
A gas at 0°C was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be

0°K
-136.5°K
0°C
-136.5°C

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