Question

calculate the no of atoms present in 46 g of na atom

Answer 1

Answer:

No of moles of Na = mass of Sodium/molar mass 

1) frist we have to divide mass of Na w.r.t molar mass of Na 

#) molar mass of Na =23 gm/mol 

#) no of moles of Na =46/23 

=2mol 

2) than we easily get the no of moless.

no of atoms in Na =2 * avocadro no= 2 * 6.03 *10^23 =12.06 *10^23 atom

3) than we have to multiply the no of moless wd avocadro no.