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Please explain me Principle of atom conservation in detail and the kind of questions that can be asked from this topic.

SAGAR SINGH - IIT DELHI
879 Points
10 years ago

Dear rishabh,

The principle implies Number of atoms remains constant. Lets understand this with an example.

1g of a mixture of cuprous oxide and cupric oxide was quantitatively reduced to 0.839 g of metallic copper. what is the weight of cupric oxide in the original sample.

The solution is:

63.563 + 16 = 79.563
127.126 + 16 = 143.126
x*79.563 + y*143.126 = 1
x*63.563 + y*127.126 = 0.839
x = 0.006925497
x*79.563 = 0.551 g cupric oxide

All the best.

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Sagar Singh

B.Tech, IIT Delhi

Rishabh Dabral
32 Points
10 years ago

Sir,

I didn't understand the last three steps of the example....plz explain me in detail.