Which classes of isomers are easier to separate from each other in the laboratory: enantiomers or diastereomers?
1 answer:
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25
Explanation
The orbital quantum number of an atomic subshell determines the maximum number of electrons it can contain. For example:
- Each
orbital
holds up to
electrons
- Each
orbital
holds up to
electrons
- Each
orbital
holds up to
electrons
The atom in question here contains four fully-occupied orbitals, two fully-occupied
orbitals along with
electrons in a partially-occupied
orbital. It thus contains
Answer:
0.51M
Explanation:
Given parameters:
Initial volume of NaBr = 340mL
Initial molarity = 1.5M
Final volume = 1000mL
Unknown:
Final molarity = ?
Solution;
This is a dilution problem whereas the concentration of a compound changes from one to another.
In this kind of problem, we must establish that the number of moles still remains the same.
number of moles initially before diluting = number of moles after dilution
Number of moles = Molarity x volume
Let us find the number of moles;
Number of moles = initial volume x initial molarity
Convert mL to dm³;
1000mL = 1dm³
340mL gives = 0.34dm³
Number of moles = initial volume x initial molarity = 0.34 x 1.5 = 0.51moles
Now to find the new molarity/concentration;
Final molarity = =
= 0.51M
We can see a massive drop in molarity this is due to dilution of the initial concentration.