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?

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?

How many molecules are present in 1g N_2 ?

How many H_2O molecules are present in 90g of water

The molecular mass of water (H_2O) is 18. How many moles of molecules are there in 180g of H_2O ?

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) ​

The combination of elements form compounds is governed by the laws of chemical combination 28 g of N_2 is mixed with 12g of H_2 to form ammonia as per the reaction, N_2+3H_2rarr2NH_3. Which is the limiting reagent in this reaction?

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.

Calculate the number of molecules in each of the following : 1 g N_2 , 1 g CO_2 . ( Given that N_a is 6.02 xx 10^23 , molecular mass of N_2 is 28 and CO_2 is 44).

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