Question

I) state the law of conservation of mass. give an example to illustrate this law.ii) h
ow many atoms of carbon and oxygen are present in a molecule ofcarbondioxide?

Answer 1

Answer:

I) The law of conservation of mass states that matter can neither be created nor destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases, equals the original mass of the charcoal and the oxygen when it first reacted.

II) For CO2 there is one atom of carbon and two atoms of oxygen.

  C+O2=CO2