Atoms and Molec...

Which of the following cations does not form soluble complex with excess NaOH solution as well as excess $$NH_4OH$$ solution ?

Molecular mass of one mole of $$H_{2}SO_{4}$$ is ______.

Hydrogen combines with oxygen to form $$H_2O$$ in which 16 g of oxygen combine with 2 g of hydrogen. Hydrogen also combines with carbon to form $$CH_4$$ in which 2 g of hydrogen combine with 6 g of carbon.If carbon and oxygen combine together then they will do show in the ratio of 

The mass of one molecule of carbon dioxide is:

How many moles of $$CO_{ 2 }$$ are present in 220 mg ?

Atomic radius is measured in?

If the mass of neutrons is doubled and that of protons is halved, the molecular mass of $$H_2O$$ containing only $$H^1$$ and $$O^{16}$$ atoms will _____________.

At  $$25^oC$$, $$K_{sp}$$ value of $$AgCl$$ in water is $$1.8 \times 10^{-10}$$. If $$10^{-5}$$ moles of $$Ag^+$$ are added to this solution then $$K_{sp}$$ will be

Number of atoms in 560 g of Fe (atomic mass = 56 u) is

The number of moles in $$ 2 \times 10^{24} $$ atoms of iron are