The percentage composition of carbon by mole in methane is:

What is percentage composition.

What is the percentage composition of urine ?

The percentage composition composition of carbon in urea, [CO(NH_(2))_(2)] is

The percentage composition of carbon in urea, [CO(NH_(2))_(2)] is

Oxidation number of carbon in methane is

The composition of carbon di oxide in air is ______

Determine the formula of organic compound if its molecule contains 12 atoms of carbon. The percentage composition of hydrogen and oxygen are 6.48 and 51.42 respectively.

Give the percentage composition of the following in human body: Carbon

Calculate the percentage composition of the elements present in magnesium carbonate. How many kilogram of CO_(2) can be obtained by heating 1 kg of 90 % pure magnesium carbonate.