I think it’s C but I’m not sure
compound name compound formula elements present
water H2O hydrogen (H) and oxygen (O)
ammonia NH3 nitrogen (N) and hydrogen (H)
carbon monoxide CO carbon (C) and oxygen (O)
carbon dioxide CO2 carbon (C) and oxygen (O)
Answer:
3
Explanation:
Because in product 3CuSO4 is present it means 3 SO4 sulphate ions are present