Find the number of (1) atoms and (2) molecules present in 1 g of oxygen.

Calculate the numbers of atoms and molecules present in 6 gms of oxygen .

Find the number of moles and molecules present in 7.1 g of Cl_(2). (At Wt. Cl = 35.5)

The number of water molecules present in 8 g of oxygen gas are:

The number of molecules present in 1g of hydrogen

The number of oxygen molecules present in 100 grams of limestone is

(a) Calculate the number of atoms/molecules present in the following: (a) 10g of Hg

If the number of gram-molecule present in 4.8g of oxygen and x g of nitrogen be equal, calculate the value of x.