Find out the mass of oxygen atom in 44.8L of `CO_2` in STP.

Find out the mass of. 1 mole of H_2O

Find out the number of N atoms in. 22.4 L of N_2 at STP

Find out the mass of Hydrogen atom and chlo-rine atom in 10 moles of HCI.

One mole of an element contains 6.022xx10^23 atoms. find the number of oxygen atoms in 4 g of O_2 .

Find the number of moles in 7.8L of N_(2) at STP.

Find the number of moles of 44.8L gas at STP.

Look at the balance equation given. 2NaOH+CO_2rarrNa_2CO_3+H_2O : Find out the mass of NaOH needed for 264 g CO_2 to react completely.

Calculate the mass of zinc required to produce 448 mL of H_2 at STP by reacting with dilute sulphuric acid (Atomic mass of Zn = 65).

Calculate the number of molecules present in 56mL of CO_2 at STP.