Answer: See attached image
Explanation:
1. Synthesis reaction
2. Decomposition reaction
3. Double replacement reaction
4. Combustion reaction
5. Single replacement reaction
1 mole ------------ 6.02 x10²³ molecules
? mole ----------- 1.505 x10²³ molecules
1.505x10²³ / 6.02x10²³ => 0.25 moles
hope this helps!