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Stoichiometry

Stoichiometry
The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be __________ times.

√2
4
43834
43832

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Stoichiometry
Avogadro's number is equal to

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Stoichiometry
A solution with reasonably permanent pH is called a/an __________ solution.

Colloidal
Buffer
Non-ideal
Ideal

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Stoichiometry
The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the

Percentage saturation
Relative humidity
Relative saturation
None of these

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Stoichiometry
1 BTU/ft³ is approximately equal to __________ kcal/m³.

9
252
1
4

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Stoichiometry
A gaseous mixture contains 14 kg of N₂, 16 kg of O₂ and 17 kg of NH₃. The mole fraction of oxygen is

0.16
0.47
0.33
0.66

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