For the ones that don’t need numbers, I will put 1, but choose what you personally learnt:
(1), 2, 2, (1), 2
I believe putting 1 would be the best option I have, just incase
Answer:
7.28 mol
Explanation:
First find the Molar mass of Ba in the periodic table
which is 137.3
the unit of molar mass is g/mol
1000gx
7.28 mol
Answer:
D - A person's potential height is inherited, but they might not get enough nutrition to reach it.
Explanation:
This problem is describing the vapor-liquid equilibrium between benzene and toluene in which equal moles of each component are present in the vapor and the initial compositions in the liquid are required, considering that the vapor pressures of benzene and toluene are 750. torr and 300. torr respectively.
In this case, it turns out possible to use the Raoult's law in order to come up with a model for this system:
Thus, we infer that the compositions of benzene and toluene in the vapor are both 0.5 because equal number of moles are condensed. Next, since the mole fractions in the liquid phase sum 1, we rewrite the previous expressions as follows:
And insert one into the other, via the total pressure:
Now, we can start plugging in the numbers we were given:
Then, solve for the mole fraction of benzene in the liquid phase:
And finally, the mole fraction of toluene in the liquid phase:
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