Answer:
Explanation:
Isomerism is the occurrence of two or more compounds with the same molecular formula but different structures. Isomers with the same molecular formula and belonging to the same homologous series tends to have similar chemical properties but slightly different physical properties as a result of their constitutional (structural differences).
Thus,as the number of carbon atoms in a molecule increases , the number of isomer also increases. In the given question C7H16 is known as heptane which have nine (9) possible constitutional (structural) isomers.
The main objective is to provide the names for the constitutional isomers with the molecular formula C7H16.
In the attached file below; we've shown the possible isomers of heptane (C7H16). and we've identify them by naming them.
The molar mass of the compound:
If the solution has an osmotic pressure of 8.44 torr, then the molar mass of the unknown non-electrolyte is 223.14 g.
What is osmosis?
- Osmosis is defined as the flow of solvent molecules through semi-permeable membrane.
- Osmotic pressure is the pressure applied to stop the flow of solvent molecules.
- It is a colligative property that means osmotic pressure depends on the number of solute particles .
Therefore,
π
( for electrolytes)
Where, π= Osmotic pressure
i = Van 't Hoff factor
n= moles
R= Gaseous constant = 62.363577 L torr 
T= Temperature
V= Volume of solution
Given:
T= 298K
V= 150 mL= 0.150 L
Given mass of unknown electrolyte= 15.2 mg = 15.2 x 
g
Osmotic pressure= 8.44 torr
Molar mass= ?
For non-electrolytes:
πV = n RT
πV=
RT
Calculations:
Putting the given values in the formula:
8.44 x 0.150 =15.2 x / M x 62.36 x 298
1.266 = 282.5/M
M = 282.5/1.266
M = 223.14 g
Therefore,
The molar mass of the unknown non-electrolyte is 223.14g.
Learn more about Osmotic pressure here,
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The correct answer is A. apples coming in many different varieties.
This is because people who grow apples mix different kinds of apples in order to produce new ones, which means they are selecting the qualities they want the new apple to have in order to get the best results. B, C, and D are incorrect because that is the normal behavior or appearance of these animals - there is nothing extraordinary about them that was created thanks to selective breeding..
Answer:
is equal to the action force , but acts in the opposite direction.
Explanation:
- All you need to solve is apply Newton's third law.
It states that
- Every action has an equal and opposite reaction
Or
