Question

3x10^(-21) moles of an amino acid having molecular mass 200g/mol would have molecules
a;200
b:1800
c:1200
d:360000
answer with solution...

Answer 1

Solution:
1 mole – 6.02*10:23 molecules
3*10-21 moles – x molecules
x=3*10-21 moles*6.02*10:23 molecules/1mole=1800 molecules
Answer: 1800