Question

1. State the two laws of chemical combinations.

2. Can there be a variation in chemical composition of two samples of pure water taken from two different

places? Explain.

3. If 3g of carbon burns in 8g oxygen to produce 11g of carbon dioxide. Then how much carbon dioxide will

be produced if 12g of carbon is burnt in 32g of oxygen? Which law of chemical combination will govern

your answer?

4. Which elements are involved in the formation of Ammonia and Carbon dioxide?​

Answer 1

Answer:

1. The law of the conservation of mass, in which mass before reaction has to equal mass after reaction. The law of constant proportions, in which the ratio mass for the same compound is constant. The law of multiple proportions, in which multiple elements can combine with each other in multiple ratios; and finally.
2. Some of these substances can be observed when the water in seawater ... Water, H2O, is a pure substance, a compound made of hydrogen and oxygen. ... all of the dissolved substances mixed in water have been removed by evaporation. ... varies from place to place and gives water from different areas their distinctive .
3. 3.0 g of carbon combines with 8.0 g of oxygen to give 11.0 of carbon dioxide. If 3 g of carbon is burnt in 50 g of oxygen, then 3 g of carbon will react with 8 g of oxygen. The remaining 42 g of oxygen will be left un-reactive. In this case also, only 11 g of carbon dioxide will be formed.