A. is the answer, because the more an experiment is repeated, it will become apparent if it yields the same results thus confirming or debunking the hypothesis.
Answer: it would be a 1 to 1 ratio
Explanation: originally it would be 2 to 2 but you have to reduce
Answer:
The following reaction will occur at cathode:
Explanation:
The two half reaction during electrolysis of aqueous nickel sulfate will be
a) anode reaction :
Water will undergo oxidation and will evolve oxygen gas at anode as shown in the given reaction:
b) Cathode reaction: The reduction of Nickel ion will occur by gain of two electrons as shown in the given equation:
Thus the overall reaction will be:
Gas molecules have either very weak bonds or no bonds at all, so they can move freely and quickly. Because of this, not only will a gas conform to the shape of its container, it will also expand to completely fill the container.
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>