What prefix is used to indicate that the main chain of a hydrocarbon contains four carbon atoms?

Answers

Answer 1

Answer: The prefix is used to indicate that the main chain of a hydrocarbon contains four carbon atoms is "but-". Examples of carbon compounds with four carbons in the main chain are: butane, butanol, butyl, butene, etc. It can be observed that all of the compounds have a common prefix of "but".

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Which refers to a mixture that contains more than one phase in which the characteristics of the particles vary throughout the mixture?

Answers

This type of mixture is a heterogeneous mixture. It is any mixture that is not uniform. Heterogeneous mixtures always have more than one phase.It is made up of substances which stays physically separate with each other. Best example is a mixture of sand and sugar. If you get two samples from different points of the mixture and analyze it, you will see that the concentrations of the components are different and that the two solid phases never combine with each other.

Answer:

C. Heterogeneous

Explanation:

Rust on weathered rocks is caused by _____.saltation
oxidation
hydrolysis
abrasion

Answers

Rust on weathered rocks is caused by the process of oxidation. Oxidation is a process of chemical weathering that occurs when oxygen combines with minerals in rocks. rust occurs when oxygen combines with iron in rocks to form the reddish brown iron oxide.

Answer: The correct answer is oxidation.

Explanation:

Rust is a reddish-brown colored compound which is formed by the oxidation of Iron to form ferric oxide. The formula for this chemical compound is $Fe-2O_3$

Oxidation is defined as the reaction in which addition of oxygen takes place.

The reaction for the formation of rust is given by the equation, we get:

$4Fe(s)+3O_2(g)\rightarrow 2Fe_2O_3(s)$

By Stoichiometry,

4 moles of iron metal reacts with 3 moles of oxygen gas to form 2 moles of ferric oxide.

Hence, the correct answer is oxidation.

Which statement best describes the effect of low ionization energies and low electronegativities on metallic bonding? a. The valence electrons are easily delocalized.
b. The valence electrons stay in a single orbital.
c. The valence electrons break free of the crystals.
d. The valence electrons move closer to the nuclei.

Answers

Answer: The valence electrons are easily delocalized. As the ionization energy increases the energy required to remove the valance electrons from the atom also increases. So the valance electrons move closer to the nuclei. But low ionization energy makes the atom to lose valance electrons much easier.

Answer: THE answer is A

Explanation: took the exam

Which tiny, round “factory” puts together protein and is often found in the endoplasmic reticulum?A.
chromosome

B.
chloroplast

C.
Golgi body

D.
ribosome

Answers

In the cytoplasm, ribsomal RNA (rRNA), a type of RNA, andprotein combine to form a nucleoprotein called a ribosome. The ribosomeserves as the site and carries the enzymes necessary for proteinsynthesis. They are often takes the shape of small round particlesattached in the endoplasmic reticulum. The ribosome attaches itself to m-RNAand provides the stabilizing structure to hold all substances in position asthe protein is synthesized. Several ribosomes may be attached to a single RNAat any time.

i believe that the answer is B , chloroplast. you can work out the problem any other wat too.

i hope this helps

Why does an egg sink in fresh water but float in salt water??

Answers

If an object is less dense than the water around it, it will float. Because salt water is denser than freshwater, some things float more easily in the ocean—or extremely salty bodies of the water, such as the Dead Sea. You can make your own dense water by adding salt to tap water.

Name the solutes that raises the boiling point of water the most.

Answers

Non-volatile solutes such as salt raises the boiling point of water. Hope the answer helps! Good luck!

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