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

Which gas contains larger number of molecules?

The mass of 2.5 g.atom of oxygen is

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

Which of the following statement is correct

What is the mass percent of carbon in $C{O_2}$

In which case the number of molecules of water maximum

A gaseous mixture contains oxygen and nitrogen in the ratio of $1:4$ by weight. Therefore, the ratio of their number of molecules is:

What is the mass of one mole of carbon dioxide (CO2)?

7.5 gr of a gas occupy 5.8 L of volume at STP, the gas is