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Stoichiometric Calculations

Simple ratio ...

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Simple ratio of masses of oxygen which combine with fixed mass of carbon in CO and CO2 is Options: 16 : 32 14 : 16 1 : 2 4 : 8

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Q. Carbon combines with oxygen to form two oxides, carbon monoxide, and carbon dioxide. The ratio of the different masses of oxygen that combine with a fixed mass of carbon is 1:2, which is a simple ratio. This fact is in agreement with the:

Q. The ratio between the different weights of oxygen in different compounds which combine with the same weight of nitrogen (

14

8 : 16 : 24 : 32 : 40

1 : 2 : 3 : 4 : 5

.
This is simple whole number which supports the law of:

Q. Assertion :12 parts by mass of carbon in

C O

C O_{2}

molecules combine with 16 and 32 parts by mass of oxygen. Reason: A given compound always contains exactly the same proportion of elements by weight.

Q. Two elements, X (Atomic mass 16) and Y (Atomic mass 14) combine to form compounds A, B and C. The ratio of different masses of Y which combines with fixed mass of X in A, B, and C is

1 : 3 : 5

. If 32 parts by mass of X combines with 84 parts by mass of Y in B, then in C 16 parts by mass of X will combine with

Which of the following statements indicates that law of multiple proportion is being followed ?

(a) Sample of carbon dioxide taken from any source will always have carbon and oxygen in the ratio 1 : 2

(b) Carbon forms two oxides namely $C O_{2}$ and CO, where masses of oxygen which combine with fixed mass of carbon are in the simple ratio 2 : 1

(c) When magnesium burns in oxygen, the amount of magnesium taken for the reactoin is equal to the amount of magnesium in magnesium oxide formed

(d) At constant temperature and pressure 200 mL of hydrogen will combine with 100 mL oxygen to produce 200 mL of water vapour

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