B.the number of carbon atoms in 12 mg of his homework writing. ( Ans :

1.	B.the number of carbon atoms in 12 mg of his homework writing. ( Ans : 6.022×1020)
Answer» Explanation: 12 mg=12×10^-3 g number of MOLE =12×10^-3÷12=0.001 mol number of ATOM =0.001×6.022×10^23 =6.022×10^20

B.the number of carbon atoms in 12 mg of his homework writing. ( Ans : 6.022×1020)

Answer»

Explanation:

12 mg=12×10^-3 g

number of MOLE

=12×10^-3÷12=0.001 mol

number of ATOM =0.001×6.022×10^23

=6.022×10^20