" Calculate volume of "H_(2)" gas kept at STP.if it is contains as many "H" atoms as in "98gm" of "H,PO_(4)" (Atomic mass of "P=31" ) "

Calculate volume of H_(2) gas kept at STP if it contains as many H atoms as in 98 gm H_(3)PO_(4) . [atomic mass of P =31 ]

Calculate the volume of H_(2) gas (at STP) liberated by the reaction of exces Zn with 500 mL 0.5(N) H_(2)SO_(4) .

Mass of 1 mL of H_(2) gas at STP is same as the mass of 9.86xx10^(17) atoms of iron. Find the atomic mass of iron.

Calculate the volume of ammonia gas produced at STP when 140g of nitrogen gas reacts with 30g of hydrogen gas.( Atomic masses: N= 14u , H =1u)

The number of oxygen atoms present in 24.5 gm of H_(3)PO_(4) is equal to (P = 31)

The number of oxygen atoms present in 24.5 gm of H_(3)PO_(4) is equal to (P = 31)

Calculate the molecular mass of H3PO4

Calculate the number of H & O atoms in 90 gm water at 4^@C .

{:("Column-I","Column-II"),("A) 16g of "O_(2),"P) 1gm atom of O"),("B) Gram molar volume of "H_(2)O,"Q) 22.4 lit at STP"),("C) 18 g of "H_(2)O,"R) 18 ml"),("D) 1/2 mole "O_(2)+1" gm atom of "H_(2),"S) 11.2 lit at STP"):}