Mass of 1 atom of Hydrogen is

Which of the following contains the largest number of atoms -

Four containers of 2L capacity contains dinitrogen as described below. Which one contains maximum number of molecules under similar conditions.

What is correct for 10 g of CaCO3 -

The total number of electrons present in 18 mL water (density 1 g/mL) is -

4.0 g of caustic soda (mol mass 40) contains same number of sodium ions as are present in-

One atom of an element ‘X’ weighs 6.664 × 10–23 gm. The number of gram atoms in 40 kg of it is -

The number of oxygen atoms present in 14.6 g of magnesium bicarbonate [Mg(HCO3 ) 2 ] is

One mole of P4 molecules contains -

he total number of protons , electrons and neutrons in 12gm of 6C12 is

Out of 1.0 g dioxygen, 1.0 g (atomic) oxygen and 1.0 g of ozone, the maximum number of oxygen atoms are contained in -