Elements X and Y form compounds $XY_2$ and $X_3Y_2$. If 20 g of $XY_2$ contains 0.2 moles and 18 g of $X_3Y_2$ contains 0.1 moles. What are the atomic weights of elements X and Y?

The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is:

Which of the following has the maximum number of atoms?

What mass of AgCl is precipitated when 25 mL of a 8.45% $\AgNO_3$ solution is mixed with 50 mL of a 5.8% NaCl solution?

Which of the following contains the maximum number of water molecules?

How many moles are present in 18g of water (H2O)?

Which of the following statement is correct

Rank the following samples from least to greatest number of atoms:

I. 5 g of $H_2$

II. 5 g of $O_2$

III. 5 g of $N_2$

IV. 5 g of $Cl_2$

13.5 g aluminium changes to ${\rm{A}}{{\rm{l}}^{3 + }}ion$ in solution by losing :

How many moles of hydrogen gas are needed to react with nitrogen gas to produce 20 moles of ammonia according to the Haber-Bosch process?

A mixture of $CO_2$ and $N_2$ gases contains 0.44 g of $CO_2$ and 0.56 g of $N_2$. The total number of moles of gases in the mixture is: