Ice Station Bravo near the North Pole launched a helium-filled balloon to check atmospheric conditions. At sea level (1.0 atm) w
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This is an incomplete question, here is a complete question.
The balanced chemical reaction is:
In another experiment, if 80 molecules react with 104
molecules. How many
molecules will be produced which reactant will be used up in the reaction.
Answer : The number of molecules of will be, 52 molecules and
reactant will be used up in the reaction because it is a limiting reagent and it limits the formation of product.
Explanation :
The balanced chemical reaction is:
First we have to determine the limiting reagent.
From the balanced reaction we conclude that,
As, 8 molecules of react with 6 molecule of
So, 104 molecules of react with
molecule of
From this we conclude that, is an excess reagent because the given moles are greater than the required moles and
is a limiting reagent and it limits the formation of product.
Now we have to calculate the molecules of
From the reaction, we conclude that
As, 8 molecules of react to give 4 molecules of
So, 104 molecules of react to give
molecules of
Hence, the number of molecules of will be, 52 molecules and
reactant will be used up in the reaction because it is a limiting reagent and it limits the formation of product.
Answer:
Mole fraction of Nacl is 0.173
Explanation:
we know that
where,
P sol - the vapor pressure of the solution
χ solvent - the mole fraction of the solvent
P ∘ solvent - the vapor pressure of the pure solvent
This means that in order to be able to calculate the mole fraction of sodium chloride, you need to know what the vapor pressure of pure water is at
25 ° C You can use an online calculator to find that the vapor pressure of pure water at 25 C is equal to about 23.8 torr .
=0.827
Also we know that
This means that the mole fraction of sodium chloride is
χ_{Nacl}= 1-Χ_{water}
= 1-0.827 =0.173