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lara31 [8.8K]
2 years ago
13

What is the pOH of a solution that has a hydronium ion concentration [H3O+] of 8.26 x 10–5 M?

Chemistry
1 answer:
kirill115 [55]2 years ago
8 0

Answer:

9.92

Explanation:

Since we are given the concetration of H+ we can find the ph by taking the negative log and then subtracting the ph from 14 to give us pOH

-log(8.26e-5) = pH= 4.08

pOH= 14-4.08

pOH= 9.92

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What is the pressure of a mixture of oxygen, nitrogen and carbon dioxide gases if the pressures of these gases are as follows: P
AleksandrR [38]

Answer:

his is an example of a first-year chemistry question where you must first convert two of the pressures to the units of the third and add them up, per Dalton’s law of additive pressures. There are three possible answers, one for each of the three pressure units.

1 atm = 760 torr …… torr and mm Hg are the same

1 atm = 101.3 kPa

Dalton’s law:

P(total) = P(O2) + P(N2) + P(CO2)

Explanation:

Gases will assume whatever pressure depending on the equation of state of the mixture (in this case) and the volume htey are contained in. That could be the ideal gas law and simple mixing law, If you are quoting the partial pressures which you call simply “the pressure” of each gas, and that these refer to their values in the present mixture, then yes, we would add them up. The pressures are low enough for the ideal gas law to apply provided the temperature is not extremely low as well .

8 0
3 years ago
What structural feature is indicated by the suffix -ene in the name of a hydrocarbon
vaieri [72.5K]

Answer:

A double bond between carbon atoms

Explanation:

The suffix -ene is used for alkenes, which tells you that the molecule has a carbon-carbon double bond.

7 0
3 years ago
When a solid melts, why does it absorb energy?
yan [13]
In order for the molecules to actually separate from each other, more energy must be added. This energy, called heat of fusion or heat of melting, is absorbed by the particles as potential energy as the solid changes to a liquid. I hope this helps
5 0
3 years ago
Differenciate between adsorption and absorption.<br><img src="https://tex.z-dn.net/?f=%20%5C%5C%20" id="TexFormula1" title=" \\
blagie [28]

Answer:

Adsorption is the adhesion of a liquid or gas on the surface of a solid material, forming a thin film on the surface While Absorption is the process of being swallowed up or by being absorbed

4 0
2 years ago
Read 2 more answers
2 C2H6 + 7 O2 → 4 CO2 + 6 H2O
algol13

Answer:

x = 4.5

4.5 moles of C2H6  is required to produce 13.5 moles of H2O

Explanation:

Given equation is :

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

if it requires 2 moles of C2H6 to produce 6 moles of H2O

then x moles of C2H6 is required to produce 13.5 moles of H2O

Using unitary method for solving, we get

x = 13.5 x 2 / 6

x = 13.5 / 3

x = 4.5

Therefore, 4.5 moles of C2H6  is required to produce 13.5 moles of H2O

5 0
3 years ago
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