Certain compounds and its masses are given. 68 g `NH_3`, 28 g`N_2`, `9 gH_2O`,`128 g `O_2` : Which of these compounds have equal number of molecules?

Certain compounds and its masses are given: 68 g NH_3 , 28 g N_2 , 9 gH_2O , 128 g O_2 : How many molecules are there?

Certain compounds and its masses are given: 68 g NH_3 , 28 g N_2 , 9 gH_2O , 128 g O_2 : How many atoms are there in 9 g of water?

4 Sample of substances are given Which of these samples have same number of molecules?68g NH_(3) , 28g N_(2) , 49g H_(2)SO_(4) , 128g O_(2) ​

4 Sample of substances are given, Which of these sample has least number of molecules? 52g N_(2)O_(5) , 36g H_(2)O , 28g CO , 51 g NH_(3)

1.2 g of an organic compound containing C, H and oxygen on combustion gave 2.64 g CO_2 and 1.08 g H_2 O . The mass of oxygen in 1.2 g of the compound is

N_2(g)+3H_2(g)harr2NH_3(g) in this equation what is the total number of moles of the reactant molecules.

Examine the samples given: 20 g of He , 44.8 L of NH_3 at STP, 67.2 L of N_2 at STP, 1 mol of H_2SO_4 and 180 g of H_2O : Arrange the samples in the increasing order of the number of molecules in each.