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GrogVix [38]
3 years ago
13

Equal masses of carbon dioxide (CO2) and oxygen (O2) are mixed. What is the mole

Chemistry
1 answer:
svetoff [14.1K]3 years ago
6 0

The mole fraction of oxygen in this mixture is = 0.5789  which is not listed  in the options. while the mole fraction of carbon dioxide = 0.4211 ( A )

Given that :

Mass of carbon dioxide = mass of oxygen

lets assume the given mass  = x

<u>first step : determine the moles of CO₂ and O₂</u>

moles of CO₂ = mass / molar mass of CO₂

                       = x / 44

moles of O₂  =  mass / molar mass of O2

                     = x / 32

∴ mole fraction of O₂ = moles of O₂ / ( Total moles in the mixture )

                                   = \frac{x}{32} / ( \frac{x}{44} + \frac{x}{32} )

                                   = \frac{44*32*(x)}{32 * 76 *(x)}  = 0.5789

While the mole fraction of Carbon dioxide = 1 - 0.5789 = 0.4211

hence the mole fraction of oxygen in this mixture = 0.5789 while the mole fraction of Carbon dioxide = 0.4211

learn more here : brainly.com/question/15063496

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Answer : The fraction of carbonic acid present in the blood is 5.95%

Explanation :

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The pH of a buffer is calculated using Henderson equation which is given below.

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We have been given,

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Let us plug in the values in Henderson equation to find the ratio Base/Acid.

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[Acid] = \frac{1}{16.8}

[Acid] = 0.0595

[Acid] = 0.0595 x 100 = 5.95 %

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