Question

a compound contains 0.8g carbon and 0.2g hydrogen. if the molecular mass of a compound is 30, the molecular formula is (a)CH3
(b)C2H2
(c)C2H4D
(d)C2H4D

Answer 1

law of conservation. Conservation law, also called law of conservation, in physics, several principles that state that certain physical properties (i.e., measurable quantities) do not change in the course of time within an isolated physical system.