Question

C) 3
Calculate the number of particles in each of the following (AS)
a) 46g of Na
b) 8g of O2
c) 0.1 mole of hydrogen​

Answer 1

Answer:

a.weight/molar mass =46/23=2moles

no of particles=no of moles*avagadros number

=6.023*10^23*2=12.046*10^23

b.no of moles=8/32=0.25

no o particles=6.023*10^23*0.25

=1.505*10^23

c.no of particles=no of moles*avagadros number

0.1*6.023*10^23=6.023*10^22