Question

ples answer me urgent​

Answer 1

Answer:

substance No. of molecules No. of atoms

1) O2. 1 2

2) 2N2. 2. 4

3)6Cl2. 6. 12

4)2He. 2. 2

5)5Na. 5. 5

6)O3. 1. 3

7)P4. 1. 4