Secondary or both primary and secondary
It’s either one I believe
-<3 sorry if I’m wrong!
Answer:
Explanation:
Let's just get the answer and then show why the others are wrong.
The answer is C.
The number of reactants and Products need not be the same
C3H8 + 5O2 ===> 3CO2 + 4H2O
The reactants = 1 + 5 = 6
The products = 3 + 4 = 7
So A is incorrect.
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B is saying that
C3H8 + 5O2 ===> C3H8 + 5O2
The answer is obviously not B
======================
C8H18(l) + O2(g) ==> CO2(g) + H2O(g) unbalanced
Gasoline is a liquid. All the rest are gases. D is wrong.
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C is correct
The left side has
3 Cs
8 Hs
and 10 Os
The right side has
3Cs
8Hs
10 Os
There are different kinds of theory. The chemical equation that does not correspond to a standard molar enthalpy of formation is c. N₂(g) + O₂(g) ⇒ 2 NO(g).
<h3>What is standard enthalpy of formation ?</h3>
The standard enthalpy of formation of any element is known to often occur in the standard state that is zero of that element.
For example, even though oxygen can be found as ozone (O3), O2 is the known to be the most stable form.
Learn more about standard enthalpy of formation from
brainly.com/question/14047927
A no change is the answer