A reaction that is spontaneous will always happen. Option D is right.
Explanation:
When certain conditions for reactions are fulfilled the reaction that occurs without any outside intervention with the formation of product is called as spontaneous reaction.
In spontaneous reaction the product is of lesser energy than reactants.
The spontaneous reaction leads to increase in entropy. If the entropy of the system and surrounding is positive the reaction is spontaneous.
During phase change as solid to liquid causes molecules to be disordered and increase in the movement causes increase disorder hence increase in entropy and a spontaneous reaction.
In chemical reactions if on mixing the substances heat is released thus entropy increases. The spontaneous reaction can also occur even if entropy decreases.
The reaction is not spontaneous if Gibb's free energy is negative.
Water, salt<span>, and </span>sugar<span> are examples of compounds
hope this helps</span>
To make soemthing burn, bonds are broken to produce heat which is a change in chemical makeup
Answer:
D) Endothermic
Explanation:
An endothermic reaction absorbs heat. In this case, the wax absorbs the heat and it melts.
Also, I took the exam and I got it right.
<h2>
Answer</h2>
The volume will be<u> 50 L</u>
<h2>
Explanation</h2>
From Kelvin Law of Temperature, we know that
![V_{1} T_{1} =V_{2} T_{2}](https://tex.z-dn.net/?f=V_%7B1%7D%20T_%7B1%7D%20%3DV_%7B2%7D%20T_%7B2%7D)
We know that
= 200 L
= 100 K
= 400 K
So,
![V_{2} = V_{1} T_{1}/T_{2}](https://tex.z-dn.net/?f=V_%7B2%7D%20%3D%20V_%7B1%7D%20T_%7B1%7D%2FT_%7B2%7D)
![V_{2} = 200*100/400](https://tex.z-dn.net/?f=V_%7B2%7D%20%3D%20200%2A100%2F400)
![V_{2} = 50 L](https://tex.z-dn.net/?f=V_%7B2%7D%20%3D%2050%20L)
The answer of the givern question is 50L