Write the chemical formula for the following elements. a. Hydrogen b. Nitrogen. c.Ozone d. Sulphur

Write the chemical formula of Oxone and Nitrogen.

Write chemical equation for the following reactions. Hydrogen gas and chlorine gas.

Write the chemical formula and name the elements present in the following compounds: a. Sodium chloride, b. Potassium hydroxide, c. Carbon dioxide, d. Calcium oxide, e. Sulphur dioxide.

Write chemical equation for the following reactions. Reaction of hydrogen with tungsten (VI) oxide on heating.

(i) Write the molecular formula and structural formula for the following molecules. (a) Nitric acid (b) dinitrogen pentoxide (c ) phosphoric acid (d) phosphine (ii) How will you manufacture sulphuric acid by contact process?