Question

Student use the carbon pencil to write his homework the mass of these was found to be 5 mg with the help of this calculate the number of carbon atoms in 12 mg of his homework writing the answer is 6.022 into 10 raise to 20

Answer 1

Answer:

6.022 × 10 raise 20

Explanation:

no.of mole of carbon= given mass/molar mass

=0.012g/12g/

mol

no of moles of carbon=0.001

mol

given atoms of carbon in 12g=0.001mol×6.022×10 raise

23 atoms/mol

=0.006022×10 raise to 23

atoms

=6.022×10 raise 20 atoms