When 5g of calcium is burnt in 2 g of oxygen then 7 g of calcium oxide is produced .What mass of calcium oxide will be produced when 37.5g of calcium is burnt in 20 g of oxygen?
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Explanation:
When 5g of calcium is burnt in 2g of oxygen ,we get 7g of calcium oxide From this we understand that, calcium and oxygen combine in the ratio 5:2.
Hence when 5g of calcium is burnt in 20g of oxygen,it will produce only 7g of calcium oxide.
This is in accordance with law of constant proportions.
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Answer:
We know that calcium and oxygen react in a fixed ratio of 5:2, by mass, to produce 7g of calcium oxide. When 5g of calcium react with 20g of oxygen, the same amount of calcium oxide will be formed. Therefore, 7g of calcium oxide will be formed when 5g of calcium will react with 20g of oxygen.
this is according low of constant proportion ....
I hope it is helpful for you dear
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