Atank is filled with a mixture of helium, oxygen, and carbon dioxide. the pressure inside the tank is 101.3 kpa. what is the partial pressure of oxygen, given the following partial pressures? a. 16.9 kpa b. 17.2 kpa c. 84.1 kpa d. 101.3 kpa
p he=84kpa
p co2= 0.1 kpa

The answer to your question is p O2 = 17.2 kPa, letter b

Explanation:

Remember that in a mixture of gases, total pressure is equal to the sum of the pressure of individual gases.

Then

          Pt = p He + p CO2 + p O2

Data

Pt = 101.3 kPa

pHe = 84kPa

pCO2 = 0.1 kPa

p O2 = ?

       Substitution

       101.3 = 84 + 0.1 + pO2

       pO2 = 101.3 - 84 - 0.1

        pO2 = 17.2 kPa

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

more infor would

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