Calculate the percentage by mass of Chlorine in HCl.

To find the gram molecular mass or molar mass we keep the numerical value same but change the units from ‘u’ to _________.

The molecular mass of a substance expressed in grams is called the ________  molecular mass of the substance.

Calculate the percentage by mass of Carbon in CO₂.

A chemical equation is the symbolic representation of a chemical reaction in the form of _______________ and formulae.

Calculate the percentage by mass of Hydrogen in HCl.

Which of the following statement / statements are correct :

(a) The molecular formula for ammonium sulphate is  

(b) Empirical formula of ammonium sulphate is   

Which of the following statement / statements are correct :

(a) Na⁺  is the radical of Sodium.

(b) H⁺ is the radical of Helium.

The percentage of hydrogen in is -

Which of the following statement / statements are correct :

(a) Oxygen is written as oxide when it comes as suffix in a molecular formula.

(b) Free radical can loss or gain electron.

(c) Free radical are unstable in nature.