Answer:
a) 
b) 
c) 
Explanation:
Hello,
In this case, in each reaction we must subtract the Gibbs free energy of formation the reactants to the Gibbs free energy of formation of the products considering each species stoichiometric coefficients. In such a way, the Gibbs free energy of formations are:

So we proceed as follows:
a)

b)

c)

Regards.
The mass isnt relevant
520 - 120 = 400
400 / 8 = 50
50ms^-2
Answer:
Explanation:
Examples of phenotypes include height, wing length, and hair color. Phenotypes also include observable characteristics that can be measured in the laboratory, such as levels of hormones or blood cells.
I don’t know “which substance” are you talking about??
You can put the picture there so we can see.
Because the chemicals are different