CHEMISTRY HIGH SCHOOL

How do the boiling points of alkenes and alkynes compare to those of alkanes

Answers

Answer 1
Answer: The boiling points of alkenes and alkynes are much higher than boiling points of alkanes. Alkenes are organic compounds which contains double bonds between two carbon attoms. Alkynes contains three bonds between two carbon atoms. Alkanes, on the other hand, only has a single bond. Comparing the three, alkanes needs the least amount of energy to break the bonds since it only has a single bond.

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How many identical double strands of DNA will be present after three rounds of replication?four
six
eight
nine

Answers

Answer:

eight

Explanation:

In the first stage of DNA replication each DNA molecule replicates into two daughter DNA. In the second stage of DNA replication each of the two daughter DNA molecule replicates into two daughter DNA, thus forming a total of four DNA molecules. In the third stage of DNA replication each of the four daughter DNA molecule replicates into two daughter DNA, thus forming a total of eight DNA molecules.

Every time you replicate DNA you get 2 new DNA and 1 strand of each DNA is composed of the parent strand. So after 3 rounds of replication....
1 --> 2 ---> 4 ---> 8
Out of these 8, 2 of them contain the parent strands. So 2/8 = 1/4 = 25%

Thus the answer is the third option, eight (8).

Classify each of the following as a suspension, solution, or colloid.

Answers

So, I did some research and found that the other part of the question was, "A. Gasoline B. Blood C. Mud" 

A suspension is a mixture containing solid particles that are large for sedimentation. We know that mud contains solid pieces of dirt that haven't been broken down. So, suspension = mud.

A solution is a mixture composed of two or more substances. We know that gasoline is made of petrol mixed with a variety of additives. So, solution = gasoline.

A colloid is a solution that has particles ranging between 1 and 1000 nanometers, yet are still able to remain evenly distributed throughout the solution. We know that blood is thin and isn't mixed with anything but our blood. So, colloid = blood.

Blood: colloid

Mud: Suspension

Gasoline: solution

When a substances is dissolved in fluid, the substance is referred to as the ______, the fluid it dissolves into the ______, and the entire mixture is called the _______

Answers

Answer:

solute, solvent, solution

solute dissolve in a solvent and the end product is called solution

Which of the following refers to the process of hydrolysis?A.) In hydrolysis, a molecule of water is released when two molecules are joined together.

B.) The end result of hydrolysis is a chain of molecules such as a polysaccharide.

C.) Water is needed for hydrolysis to take place.

D.) Hydrolysis is the process in which plants and animals create complex molecules such as carbohydrates and proteins.

Answers

Water is needed for hydrolysis to take place is the statement that refers to the process of hydrolysis.

Hydrolysis is a chemical reaction consisting of the decomposition of complex organic and inorganic substances into simpler ones by the action of water.

In turn, in the hydrolysis process, the atoms that make up the water molecules form chemical bonds with the substance that reacts with water.

There are different forms of hydrolysis, depending on the substances that are made to react with water:

  • Acid-base hydrolysis where water splits into a hydroxyl ion (OH–) and a proton (H +).

  • Strong acid-weak base salt hydrolysis where the salt cation yields a proton to water to form a hydronium ion (H3O +).

  • Hydrolysis of weak acid-weak base salt, where the cation of the salt combines with the water releasing a hydronium ion (H3O +) and the anion of the salt (from the weak acid) combines with the water releasing a hydroxyl ion ( OH–).

  • Strong acid-strong base salt hydrolysis where almost no hydrolysis occurs, due to which the dissociation balance of water is not altered, the pH in this case will be neutral.

Therefore, we can conclude that water is needed for hydrolysis to take place is the statement that refers to the process of hydrolysis.

Learn more here: brainly.com/question/11526811

Answer:

The answer is: C.) Water is needed for hydrolysis to take place.

Explanation:

Hydrolysis is the process where a molecule of water react with another molecule and its result is the division of the molecule of water. The atoms of the molecule of water become part of other structures before the separation. Taking this into account, answer A is wrong, because there is no released of water, answer B is also wrong because the result is not neccesarily a chain of molecules, answer D is not true because it no referes to a process that involves plants and animals. Answer C is correct.  

Where are the alkali metals and the halogens located on the periodic table?

Answers

Alkali: Group 1(I A). Halogens: group 17 (VII A)

Which is a compound?
a. iodine.
b. water.
c. calcium.
d. air.

Answers

The answer is b) Water.

a) and c) options are elements and d) option is a mixture.
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