Answer:5O2 + 2N2 --> 2N2O5 and 2NaCl + F2 --> 2NaF + Cl2
Step-by-step explanation:
1ST question
go to the products side and check the number of oxygen and nitrogen atoms , O-5 , N-2 , to balance this equation you need to add 2 in front of N2O5 and 5 in front of O2 (total oxygen atoms =10(5x2)). and 2 in front of N2 (total nitrogen atoms=4(2x2))
then : 5O2 + 2N2 --> 2N2O5
2nd question -
When NaCl (sodium chloride) reacts with fluorine the equation gives NaF(Sodium fluoride) so the remaining ion is chlorine so the other product needs to be chlorine gas which is Cl2
then : 2NaCl + 2F2 --> 2NaF + Cl2