Question

xii) How many atoms are there in 5 moles of sulphur?
xiii) What is a mole? What is the molar mass of substance? Find out the
molar mass of SO?
ms​

Answer 1

Answer:

No.of atoms in sulphur=5 NA , where NA is the Avogadro number and NA=6.022*10^23particles(in this case particles are atoms)

Mole:It is the unit of measurement of amount of a substance.It is defined as containing exactly 6.022*10^23 particles like atoms , molecules , ions , etc..

Molar mass:It is the mass of 1 mol of a substance,expressed in grams ,also called as gram molecular mass.

Molar mass of SO2:

Atomic mass of S=32g

Atomic mass of O=16g

So,molar mass of SO=32+16=48g