Draw the structural formula of trans-1,3-dimethylcyclohexane in the chair conformation. Choose a chair from the Templates toolba
r at the bottom. Make sure it’s the appropriate chair, including any heteroatoms. Replace the appropriate hydrogens with the appropriate CH3 or other groups. Important: Never delete the hydrogen atoms or bonds in the ring or directly attached to the ring. Also, do not try to move them by drag and drop. These actions will break the chair conformation structures. Just replace them!
1 answer:
Answer:
Look picture
Explanation:
The structural formula of a chemical compound is a graphic representation of the molecular structure, showing how the atoms are possibly arranged in space.
The real structure in what cyclohexane exist is called the chair conformation. This conformation is called the chair because it looks like a reclining lounge chair (Look picture).
The draw of trans-1,3-dimethylcyclohexane is in the chair conformation. The trans position means that one methyl group is in ecuatorial position while the other one is in axial position.
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Answer:
Molarity of the solution? 0,262 M.
Concentration of the potassium cation? 0,786 M.
Concentration of the phosphate anion? 0,262 M.
Explanation:
Potassium phosphate (K₃PO₄; 212,27 g/mol) dissolves in water thus:
K₃PO₄ → 3 K⁺ + PO₄³⁻ <em>(1)</em>
Molarity is an unit of chemical concentration given in moles of solute (K₃PO₄) per liters of solution.
There are 250 mL of solution≡0,25 L
The moles of K₃PO₄ are:
13,9 g of K₃PO₄ × = 0,0655 moles of K₃PO₄
The molarity of the solution is:
= 0,262 M
In (1) you can see that 1 mole of K₃PO₄ produces 3 moles of potassium cation. The moles of potassium cation are:
0,0655 moles×3 = 0,1965 moles
The concentration is:
= 0,786 M
The moles of K₃PO₄ are the same than moles of PO₄³⁻, thus, concentration of phosphate anion is the same than concentration of K₃PO₄. 0,262 M
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