Calculate the number of carbon atoms in 2*10^-4 moles of C6H6

Question

Chemistry Ncert chapter 1

Some basic concept of chemistry

Answer 1

There are 6.022 x 10²³ molecules per mole and 6 carbon atoms per molecule. We set this up as a dimensional analysis problem:

2x10^-4 moles x (6.022 x 10²³ molecules/1 mole) x (6 atoms C₆H₆/ 1 molecule) = 7.23x10²⁰ carbon atoms.