Answer:
Option C. +150KJ
Explanation:
Data obtained from the question include:
Heat of reactant (Hr) = 200KJ
Heat of product (Hp) = 350KJ
Change in enthalphy (ΔH) =..?
The enthalphy of the reaction can be obtained as follow:
Change in enthalphy (ΔH) = Heat of reactant (Hp) – Heat of reactant (Hr)
ΔH = Hp – Hr
ΔH = 350 – 200
ΔH = +150KJ
Therefore, the enthalphy for the reaction above is +150KJ
It should be cell, neutron, atom, and electron. If not then I’m so sorry
She should boil the water extracting the salt from the water through evaporation.
C a scientist because they would be the ones who are most qualified to do the experiment and get accurate results
Answer:
0.1 liters of NaOH.
Explanation:
When the acid solution is neutralized we have:


Where:
: is the number of moles of the acid
: is the number of moles of the base
: is the concentration of the acid
: is the concentration of the base = 0.1 M
: is the volume of the acid = 10000 L
: is the volume of the base =?
The concentration of the acid can be calculated from the pH:
![pH = -log([H^{+}])](https://tex.z-dn.net/?f=%20pH%20%3D%20-log%28%5BH%5E%7B%2B%7D%5D%29%20)
![[H^{+}] = 10^{-pH} = 10^{-6} M](https://tex.z-dn.net/?f=%20%5BH%5E%7B%2B%7D%5D%20%3D%2010%5E%7B-pH%7D%20%3D%2010%5E%7B-6%7D%20M%20)
Now, we can find the volume of the base:

Therefore, the amount of NaOH needed to neutralize the solution is 0.1 liters.
I hope it helps you!