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Alla [95]
3 years ago
5

Which equation is an example of a redox reaction?

Chemistry
2 answers:
VikaD [51]3 years ago
8 0
I think is D,,,,,,,,,,
zzz [600]3 years ago
4 0

Answer:

The answer is C.

Explanation:

A P E X approved :)

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Calculate the molarity of a solution of 0.030 mol of HCl in 0.15L of solution?
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Answer:

0.20M

Explanation:

Molarity (by definition) = moles / Volume in Liters

∴Molarity = 0.030mol/0.15Liter = 0.20M

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Which of the following is true concerning the reaction below?
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3 years ago
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What should be the mole fraction of O2 in the gas mixture the diver breathes in order to have the same partial pressure of oxyge
Nutka1998 [239]

The question is incomplete, here is the complete question:

A scuba diver is at a depth of 355 m, where the pressure is 36.5 atm.

What should be the mole fraction of O_2 in the gas mixture the diver breathes in order to have the same partial pressure of oxygen in his lungs as he would at sea level? Note that the mole fraction of oxygen at sea level is 0.209.

<u>Answer:</u> The mole fraction of oxygen in the gas mixture is 0.00573

<u>Explanation:</u>

To calculate the partial pressure, we use the equation given by Raoult's law, which is:

p_{A}=p_T\times \chi_{A}      ........(1)

where,

p_A = partial pressure of oxygen at sea level = ?

p_T = total pressure at sea level = 1.00 atm

\chi_A = mole fraction of oxygen at sea level = 0.209

Putting values in equation 1, we get:

p_{O_2}=1.00atm\times 0.209\\\\p_{O_2}=0.209atm

As, partial pressure of the oxygen in the diver's lungs is equal to the partial pressure of oxygen at sea level

We are given:

p_T=36.5atm\\p_{O_2}=0.209atm

Putting values in equation 1, we get:

0.209atm=36.5atm\times \chi_{O_2}\\\\\chi_{O_2}=\frac{0.209}{36.5}=0.00573

Hence, the mole fraction of oxygen in the gas mixture is 0.00573

3 0
3 years ago
What does it mean to say that the average daytime relative humidity of a particular city is 31 percent?
Irina-Kira [14]
This means that the air in that city has less than a third of water vapor it could contain under the same circumstances. Relative humidity is the ratio of water vapor that the air contains to the maximum amount it could carry at the same temperature. When the humidity is high the water vapor in the air is a lot and vice versa.
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3 years ago
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