Answer:
61 mole % propylcyclohexane and 39 mole % propylbenzene
Explanation:
For convenience, let’s call propylcyclohexane <em>Component 1 </em>and propylbenzene <em>Component 2</em>.
According to <em>Raoult’s Law</em>,
and
where
<em>p</em>₁ and <em>p</em>₂ are the vapour pressures of the components above the solution
χ₁ and χ₂ are the mole \fractions of the components
<em>p</em>₁° and <em>p</em>₂° are the vapour pressures of the pure components.
So,
= <em>p</em>₁ + <em>p</em>₂= 461 torr + 290 torr = 751 torr
∴ In the vapour
χ₂ = 1 – χ₁ = 1 - 0.61 = 0.39
Answer:
4.42x10⁻¹⁹ J/molecule
Explanation:
At a double bond, there's sigma and a pi bond, and at a single bond, there's only a sigma bond. Thus, if the energy to break both sigma and pi is 614 kJ/mol, and the energy to break only the sigma bond is 348 kJ/mol, the energy to break only the pi bond is:
E = 614 - 348 = 266 kJ/mol
Knowing that 1 kJ = 1000 J, E = 266,000 J/mol
By Avogadro's number, 1 mol = 6.02x10²³ molecules, thus:
E = 266,000 J/mol * 1mol/6.02x10²³ molecules
E = 4.42x10⁻¹⁹ J/molecule
Answer:
Explanation:
Given:
For a school event, 1/6 of the athletic field is reserved for the fifth -grade classes and the reserved part of the field is divided equally among the 4 fifth grade classes in the school.
To find: fraction of the whole athletic field reserved for each fifth class
Solution:
Fraction of the whole athletic field reserved for four fifth classes = 
So, fraction of the whole athletic field reserved for each fifth class = 
As land use<span> patterns change and the watershed's population grows, the amount of ... </span>Other<span> solutions to nitrogen and phosphorus pollution include upgrading stormwater ... on septic systems, and decreasing </span>fertilizer<span> applications to </span><span>lawns</span>
Answer: they are the same.
Explanation:
1) Sucrose is a compound with chemical formula C₁₂H₂₂O₁₁
2) That means that all molcules of sucrose will have the same kind of atoms in the same proportion, whic is to say same composition:
12 atoms of C: 22 atoms of H: 11 atoms of O, per each molecule of sucrose.
3) For this question you can rely in the definition of compound: a pure substance formed by the combination of two or more elements always in the same ratio (same composition).
4) That also implies, that all the molecules of sucrose have the same properties.
