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Which of the following compounds is least soluble in water?

hjlf

Answer:

3) iron (iii) hydroxide

Explanation:

4 0

2 years ago

The water cycle includes the circulation of all of the water on Earth. Which of these would be included in the water cycle? A. G

asambeis [7]

Answer:

D. All of these

Explanation:

The water cycle refers to how water evaporates from the surface of the earth, rises into the atmosphere, cools and condenses into rain or snow in clouds, and falls again to the surface as precipitation.

Ice and glaciers are part of the water cycle, even though the water in them moves very slowly, they are considered as a form of storage but it stills evaporates into the atmosphere entering the cycle. This also applies to the ocean and surface water as they are in constant evaporation because of their exposition to the sun. Therefore the correct answer is D.

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6 0

2 years ago

Name the following compound. Group of answer choices 2-methyl-4-pentyne 4-methyl-3-propyl-1-pentyne 3-isopropyl-1-hexyne 1-nonyn

Fynjy0 [20]

The question is incomplete, the complete question is shown in the image attached

Answer:

3-isopropyl-1-hexyne

Explanation:

Organic compounds can be named from the structure of the compound. The name reveals the arrangement of atoms and bonds in the molecule.

If we look at the compound in the question, we will notice that the parent chain contains six carbon atoms, the triple bond is located at position 1 and the isopropyl substituent is attached to carbon 3.

Hence the proper name of the compound becomes, 3-isopropyl-1-hexyne.

7 0

3 years ago

Calculate the Ka of your acetic acid solution. Discuss this calculation. Based on the value of Ka, is acetic acid a strong acid

lord [1]

Based on our knowledge of strong and weak acids, we can confirm that the Ka value for acetic acid will be relatively low since it is a weak acid.

Acids can be strong or weak. This is determined by its tendency to break apart into ions or stay together to form molecules. Although somewhat counter-intuitive, strong acids are those that are most likely to break apart and therefore contain a high number of ions within their solutions.

Weak acids, on the other hand, are those that tend to stay together in the form of molecules and therefore possess very low ion counts in their solutions. The acid dissociation constant, Kₐ, is used to measure whether an acid is weak or strong and how much so. In the case of Acetic acid, the ka measurement will offer a low value, indicating a weak acid.

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4 0

2 years ago

Why is it important for the buret to be clean before using? How do you clean a buret

olga55 [171]

Sometimes, the types of the contaminents might have a slight or major effect on the concentration of your tirant and the reaction that takes place in your sample or multiple samples. The second and somewhat more important reason for cleaning your burette has to do with water. When you're cleaning your glassware, it is recommended to use water to rinse it off.

7 0

2 years ago