1.
Mass of one molecule of Phosphorous (P-31) is
3.
A balanced chemical equation is in accordance with –
4.
Which is not a molecular formula ?
5.
How many years it would take to spend Avogadro’s number of Rupee at the rate of 1 million rupees in one second-
6.
What will be the volume of Cl2 at STP produced during electrolysis of MgCl2 which produce 6.5 g Mg (At wt. of Mg = 24.3 g, Cl = 35.5 g
7.
Which sample at STP has the same number of molecules as 5 liters of NO2 (g) at STP ?
8.
What is the formula for the compound formed by Calcium and Nitrogen
9.
Calculate the mass of Lithium that contains same number of atoms as present in 8 g of Magnesium. (Atomic masses of Lithium and Magnesium are 7 and 24 respectively.)
10.
The percentage by mole of NO2 in a mixture of NO2 (g) and NO(g) having average molecular mass 34 is :
