The fully balanced equation would be
4Fe + 3O2 --> 2Fe2O3
for each side, we have
4 Fe (4 iron)
6 Oxygen (O)
So the final answer is choice B) 3
Answer:NaF is ionic. NF3 is covalent. SiF4 is ionic. CaF2 is Ionic and NH4F is also ionic. Ionic compounds transfer electrons whereas covalent compounds share electrons hence the word "co". Also, ionic compounds are formed with metal and nonmetal. Where a covalent is with 2 nonmetals. Only ionic compounds would produce fluoride in water because ionic compounds can dissolve in water and covalent compounds cant.
I have no idea look it up
When positive externalities are present in a market, it means that:
Private benefits are less than social benefits
