Answer:
Volume of water added = 2.0 L
Explanation:
Initial pH of the solution = 2.7
[H^+] concentration in 2 L solution of sulfuric acid,
![pH = -log[H^+]](https://tex.z-dn.net/?f=pH%20%3D%20-log%5BH%5E%2B%5D)
![[H^+] = 10^{-pH}\ M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%20%3D%2010%5E%7B-pH%7D%5C%20M)
![[H^+] = 10^{-2.7} = 0.001995\ M = 0.002\ M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%20%3D%2010%5E%7B-2.7%7D%20%3D%200.001995%5C%20M%20%3D%200.002%5C%20M)
Final pH of the solution = 3
Final [H^+] concentration of sulfuric acid,
![[H^+] = 10^{-3} = 0.001\ M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%20%3D%2010%5E%7B-3%7D%20%3D%200.001%5C%20M)
Now,
Volume added = Final volume - Initial volume
= 4.0 - 2.0 = 2.0 L
It is different because they are completely different elements with completely different properties. Boron is a Metalloid whereas Neon is an Inert Gas
Answer:
The product is significantly impure
Explanation:
In order to test for the purity of a specific sample that was synthesized, the melting point of a compound is measured. Basically speaking, the melting point identifies how pure a compound is. There are several cases that are worth noting:
- if the measured melting point is significantly lower than theoretical, e. g., lower by 3 or more degrees, we conclude that our compound contains a substantial amount of impurities;
- wide range in the melting point indicates impurities, unless it agrees with the theoretical range.
Since our compound is even 10 degrees Celsius lower than expected, it indicates that the compound is significantly impure.
Answer:
kit kat, toblerone, dairy milk
Explanation:
ganda quoh, period.
