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What is the weight of oxygen required for the complete combustion of of ethylene?
(a)
(b)
(c)
(d)

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Important Questions on Some Basic Concepts of Chemistry
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of on decomposition produced phosphorus and hydrogen. The change in volume is

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The molar weight of a gas is . Its density at is

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A sample of phosphorus trichloride contains moles of the substance. How many atoms are there in the sample?

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In the reaction: ,
when mole of ammonia and mole of are made to react to completion,

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What weight of can be obtained by burning sulphur in of oxygen gas?

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The incorrect statement for of is

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The number of gram-atom of oxygen in of molecule is

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A hydrocarbon contains carbon. What is the empirical formula of the compound?
