All atoms that are considered as alkali metals have one valence electron on the outermost shell.
P1 x V1 P2 x V2
______ = ________
T1 T2
1260 x 23 / 200 = 144.9
1595x V/300
144.9= 1595x V/300
144.9 x 300/1595 = v
27.25 litres
I think
A: The reaction force accelerates the bat in a direction opposite that of the ball.
Answer:
(+)-cholesterol = 71.88%
(-)-cholesterol = 28.12%
Explanation:
<em>Asuming 1 gram of sample is dissolved in 1mL of water and the sample cell was 1dm long.</em>
Enantiomeric excess is defined as the amount of pure enantiomer in a sample. The formula is:
ee = [α]mixture / [α]pure enantiomer.
Replacing:
ee = 14° / 32°×100 = 43.75%
As the sample is 14°, There is an excess of (+)-cholesterol and 56.25% is a 1:1 mixture of enantiomers.
That means percent composition of enantiomers is:
<h3>(+)-cholesterol = 43.75% + 56.25%/2 = 71.88%</h3><h3>(-)-cholesterol = 56.25%/2 = 28.12%</h3>