Question

3. Oxygen combines with two isotopes of Carbon, C-12 and C-14, to form two samples of carbon dioxide.
The data voitates:
(A) Law of conservation of mass
(B) Law of multiple proportions
(C) Law of definite proportions
(D) None of these​

Answer 1

Answer:

the correct option is A.

Explanation:

When two elements combine to form two or more chemical compounds, then the masses of one of the elements which combined with a fixed mass of the other, bear a simple ratio to one another. For eg, Carbon combines with oxygen to form two compounds namely carbon dioxide and carbon monoxide.

In carbon dioxide, 12 parts by mass of carbon combine with 32 parts by mass of oxygen while in carbon monoxide, 12 parts by mass of carbon combine with 16 parts by mass of oxygen. The masses of oxygen which combined with a fixed mass of carbon in carbon monoxide and carbon dioxide are 16 and 32. These masses of oxygen bear a simple ratio of 16:32 or 1:2 to each other.

Hence, the correct option is A.

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Answer 2

Answer:

Correct answer is D

Explanation:

following three law are not applicable for that.

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