Question

Howany atoms of hydrofen are there in 25g of nh4cl?

Answer 1

the molecular weight of NH4Cl is 53 g/mol.

no of moles of NH4Cl is 25/53 =0.47 moles

1 molecule of NH4Cl contains 4 Hydrogen atoms.

1 mole has 4 moles of Hydrogen atoms.

therefore 0.47 moles of NH4Cl contains 4*0.47 mole of hydrogen = 1.88 moles

1 mole contains 6.022*10^23 atoms of hydrogen


1.88 moles contain= 1.88*6.022*10^23 atoms

= 1.14*10^24 Atoms of hydrogen.



Hope this helps.