Answer:
pH=4.63
Explanation:
The firt step is identify the <u>Acid</u> and the <u>conjugated base</u>:
HA <=>
+ ![H^+](https://tex.z-dn.net/?f=H%5E%2B)
So, for this case we will have:
<=>
+ ![H^+](https://tex.z-dn.net/?f=H%5E%2B)
Then:
HA = ![C_6H_5COOH](https://tex.z-dn.net/?f=C_6H_5COOH)
=![C_6H_5COO^-](https://tex.z-dn.net/?f=C_6H_5COO%5E-)
With this in mind we can use the <u>henderson-hasselbach equation</u>:
pH = pKa + Log ![\frac{A^-}{HA}](https://tex.z-dn.net/?f=%5Cfrac%7BA%5E-%7D%7BHA%7D)
We can calculate the <u><em>pKa</em></u> first
![pKa~=~-~Log~(6.30x10^-^5)~=~4.2](https://tex.z-dn.net/?f=pKa~%3D~-~Log~%286.30x10%5E-%5E5%29~%3D~4.2)
Then we can put the values in the equation:
pH = 4.2 + Log(
)
pH= 4.63
Answer:
what are the orbitals present in the fifth principal energy level
Explanation:
Answer:
a minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells. They bind messenger RNA and transfer RNA to synthesize polypeptides and proteins.
Explanation:
The answer is a change in internal energy causes work to be done and heat to flow into the system.
<u>Explanation:</u>
Boyle's law says, PV=RT
- Here P represents the pressure, V represents the volume and T represents the temperature. R is a constant. The volume of an ideal gas is inversely proportional to its pressure if the temperature is constant.
- When a bubble is present in deep water it has water pressure and atmospheric pressure. Then the Volume increases when water pressure raises which is proportional to the depth reduces.
- But we should not finalize the volume of the bubble will be four-time as great as at the top than the bottom. if the bottom of the lake is at four atmospheres, the temperature will not be equal to the top.
- If the bubble travels from the bottom to the top or vice-versa, it's going to lose or gain heat in a way that must be quite hard to measure.
Answer:
Moles of gas collected = 0.952 mole
Explanation:
To calculate the number of moles of the gas collected, we use the equation given by ideal gas which follows:
where,
P = pressure of the gas = 702 mmHg
V = Volume of the gas = 25.0 L
T = Temperature of the gas =
R = Gas constant =
n = number of moles of gas = ?
Putting values in above equation, we get:
<u>Moles of gas collected = 0.952 mole</u>