The percentage of CO2 increased 48 percent. Hope this helped!
Explanation:
The given data is as follows.
Refractive index of mixture = 1.456
Refractive index of hexane = 1.375
Refractive index of toulene = 1.497
Let mole fraction of hexane =
and, mole fraction of toulene =
Also, 
or, 
Hence, calculate the mole fraction of hexane as follows.
refractive index mixture= mole fraction hexane × ref index hexane + mole fraction toluene × ref index toluene.
1.456 = 
1.456 = 
0.081 = 
= 
= 0.66
Since, 
= 1 - 0.66
= 0.34
Thus, we can conclude that mole fraction of hexane in your sample is 0.34.
The combustion of the fatty acid called stearic acid has the the complete equation; C18H36O2(s) + 26O2(g) ------> 18CO2 (g) + 18 H2O(g)
<h3>What is combustion?</h3>
The term combustion has to do with the burning of a substance in air. For organic compounds, we get carbon dioxide and water as the products.
Thus, for the combustion of the fatty acid called stearic acid, the complete equation is; C18H36O2(s) + 26O2(g) ------> 18CO2 (g) + 18 H2O(g)
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2.81x10 mol Fe2O3 4H2O
number of moles of rust = mass/molar mass
=65.2 kg x1000/1Kg x 1 mol Fe2O3 4H20/231.7493g
= 2.81x10 mol Fe,0, 4H2O
<h3>
What is moles of compound?</h3>
Avogadro's number (6.022 x 1023) of molecules (or formula units) make up one mole of a substance (ionic compound). The mass of 1 mole of a chemical is indicated by its molar mass. It provides you with the amount of grams per mole of a substance, to put it another way.
In essence, bond angles indicate that electrons dislike being close to one another. Negative ions are electrons. Negatives don't attract each other. Make a comparison now. A negative person is typically viewed as unpleasant or mean, and you don't want to interact with them.
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