The valence electrons is last outer shell of an atom. So it is the last number of the electron configuration on the periodic table.
Answer:
coastal area with very high tides deep ocean water miles from a river's mouth
Explanation:
Marshes are a type of wetland ecosystem where water covers the ground for long periods of time. Marshes are dominated by herbaceous plants, such as grasses, reeds, and sedges(National Geographic Society).
hope dis help
Answer:
Specific Rotation = 105º
S% in mixture = 92%
Explanation:
Specific rotation in organic compounds varies linearly, then the enantiomeric excess can be express as:

Where alpha is the specific rotation of the mixture and alpha pure is the specific rotation of the excess enantiomer.
Then, knowing that the S enantiomer is in excess you can calculate the specific rotation of that mixture:


For calculating the percentage of S you should remember that the enantiometric excess is the percentage of excess of a certain enantiomer, for example in this case:

Since S is in Excess
Also, it is true:

Then you can solve the system of linear equations, finding:

Hope it helps!