It helps us because it shows how.heat can make something change
Answer:
answer is in the explanation
Explanation:
Answer. Explanation: ->So, molecular formula = (CH)n = (CH)6 =C6H6; in this case we substituted the calculated value of n. ->Therefore, the molecular formula of the compound having the molecular weight 78 g/mol is (D) - C6H6.
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
Pretty sure the answer is true