Number of atoms in 558.5 g of Fe is (at . wt = 55.85)

The number of molecules present in 1 mL of gas or vapour at STP is:

If you have 8g of He, 4g of $H_2$, and 32g of $O_2$, which sample has the highest number of molecules?

The Largest number of molecules is in

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

Maximum no. of atoms are present in

Elements A and B form two compounds $A_2B$ and $A_3B_2$. 0.2 moles of $A_2B$ weighs 20 g, and 0.1 moles of $A_3B_2$ weighs 18 g. Find the atomic weights of A and B.

$26\,{\rm{mL}}$ of ${\rm{C}}{{\rm{O}}_2}$ are passed over hot coke. The maximum volume of CO formed is :

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

A mixture of ${\rm{2}}{\rm{.3}}\,\,{\rm{g}}$ formic acid and ${\rm{4}}{\rm{.5}}\,\,{\rm{g}}$ oxalic acid is treated with conc. ${{\rm{H}}_{{\rm{2}}\,}}{\rm{S}}{{\rm{o}}_{\rm{4}}}$ . The evolved gaseous mixture is passed through ${\rm{KOH}}$ pellets weight (in g) of the remaining product at STP will be

Upon treating a mixture of $0.46$ g of formic acid and $0.9$ g of oxalic acid with concentrated $H_2SO_4$, a gaseous mixture is evolved. This mixture is then passed through pellets of $KOH$. Determine the mass (in g) of the remaining product at STP.