Some Basic Conc...

Percentage of Se in peroxidase anhydrase enzyme is 0.5% by weight (at. wt. = 78.4) then minimum molecular weight of peroxidase anhydrase enzyme is

An organic compound containing C, H and O gave on analysis C – 40% and H – 6.66%. Its empirical formula would be

How much calcium oxide (CaO) can be obtained by heating 200 Kg of lime stone theat is 95% pure CaCO₃ ?

Calculate the amount of NaOH required to neutralise 100 mL 0.1 M H₂SO₄

3g of an oxide of a metal is converted into chloride and it yielded 5 g of chloride. Find the equivalent weight of the metal.

A compound contains two oxygen atoms, four carbon atoms and number of hydrogen atoms is double of carbon atoms. What is the density of vapour of this compound ?

An organic compound containing C, H and N gave the following analysis : C = 40% ; H = 13.33% ; N = 46.67% Its empirical formula would be

Which one of the following statements is incorrect ?

If the components of air are N₂,78%, O₂, 21% ; Ar, 0.9% and CO₂, 0.1% by volume, what will be the molecular weight of air ?

In an experiment, 4 gm of M₂O_x oxide was reduced to 2.8 gm of the metal. If the atomic mass of the metal is 56 gm/mol, the number of oxygen atoms in the oxide is