raerea2005
25.11.2021 •
Chemistry
Write the equation that represents what happens when barium hydroxide dissolves in water. You do not need to include water as a reactant in the equation.
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Ответ:
Explanation:
It is known that relation between partial pressure, mole fraction and pressure is as follows.
Partial pressure of gas = mole fraction of gas × Pressure of gas
Therefore, putting the given values into the above formula as follows.
Partial pressure of gas = mole fraction of gas × Pressure of gas
=
= 0.237 atm
According to Henry's law,
Concentration of oxygen = Henry's law constant × partial pressure of oxygen
=
=
M
Therefore, calculate moles of oxygen in 5.00 L present as follows.
Moles of oxygen in 5.00 L = volume × concentration
=
=
mol
Now, we will calculate the mass of oxygen as follows.
Mass of oxygen = moles × molar mass of oxygen
=
mol
= 0.0494 g
or, = 49.4 mg (As 1 g = 1000 mg)
thus, we can conclude that the mass of given oxygen (in mg) is 49.4 mg.