Some Basic Conc...

Two oxides of a metal ‘M’ contain 27.6% and 30.0% of oxygen respectively. If the formula of the first oxide is M₃O₄ , find that of the second.

Naturally occuring Boron consists of two isotopes having atomic masses 10.01 and 11.01 respectively.Calculate the percentage of both the isotopes in natural Boron (Atomic mass of natural Boron = 10.81)

Calculate the mass percent of Na and S in sodium sulphate.

Determine the empirical formula of an oxide of iron which has 69.9% iron and 30.1% oxygen by mass.

Calculate the concentration of nitric acid in moles per litre which has a density , 1.41 g/mL. %w/w of nitric acid is

Calculate the number of sulphate ions in 100mL of 0.001M ammonium sulphate solution.

Some statements are given below based on the pictures. Identify true and false statements.

An aqueous solution of 6.3g oxalic acid dihydrate is made upto 250 mL. The volume of 0.1 N NaOH required to completely neutralize 10 mL of this solution is

The pair of the compounds in which both the metals are in the highest possible oxidation state is

In the analysis of 0.0500 g sample of feldspar, a mixture of the chlorides of sodium and potassium is obtained, which weighs 0.1180 g. Subsequent treatment of the mixed chlorides with silver nitrate gives 0.2451 g of silver chloride. What is the percentage of a sodium oxide and potassium oxide in feldspar ?