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3 years ago

Which of the following is caused by pollutants from farm runoff, feedlots, or septic tanks?

Chemistry

2 answers:

Lynna [10]3 years ago

5 0

Answer:

The correct answer is option 1, that is, increased fecal coliform.

Explanation:

A bacterial strain that can be witnessed in colonies in the digestive tract of animals and humans is known as the fecal coliform. It discharges from the body with the feces. It is possible that it can be found in the farm runoff as it can be a constituent of the cattle dung based manure that can be used in farming.

It can also be found in the feedlot due to the daily discharge of dung by the cattle there. In the septic tank, the animal or human fecal matter will demonstrate the colony of the coliform bacteria. Thus, if the liquid or solid matter from any of these discharges go within the freshwater body it will possibly result in pollution due to the existence of fecal coliform.

n200080 [17]3 years ago

4 0

PH below 6.5 is caused by pollutants from farm runoff, feedlots, or septic tanks. Temperature cannot possibly be generated more than 45C.

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Draw the curved arrow mechanism for the formation of an acetal from acidic methanol and 4-methylpentan-2-one in the fewest steps

morpeh [17]

Answer:

See explanation below

Explanation:

This reaction is known as Ketone hydrolisis in acid medium. This involves the formation of an hemi cetal, and then, the acetal. This is often used to convert ketones or aldehydes in ethers.

The first step involves the reaction with the acid. The carbonile reacts with the acid and forms an alcohol there. The next step is the reaction of the alcohol, in this case, the methanol to form the hemi cetal. Then in the third step, we repeat the first step, using acid to turn the OH group into a great leaving group such water. Then the water leaves the molecule, leaving the space wide open in the next step for methanol, and the acetal is formed.

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3 years ago

When comparing the two chair conformations for a monosubstituted cyclohexane ring, which type of substituent shows the greatest

Aleksandr [31]

Answer:

See the explanation

Explanation:

In this case, we have to keep in mind that in the monosubstituted product we only have to replace 1 hydrogen with another group. In this case, we are going to use the methyl group $CH_3$ .

In the axial position, we have a more steric hindrance because we have two hydrogens near to the $CH_3$ group. If we have more steric hindrance the molecule would be more unstable. In the equatorial positions, we don't any interactions because the $CH_3$ group is pointing out. If we don't have any steric hindrance the molecule will be more stable, that's why the molecule will the equatorial position.

See figure 1

I hope it helps!

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3 years ago

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Ivenika [448]

Answer: A

Explanation:

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3 years ago

Urgent!! A chemist measured 5.2 g copper(II) bromide tetrahydrate (CuBr2•4(H2O)). How many moles were measured out? Answer in un

bezimeni [28]

The moles which were measured out is calculated using the following formula

moles = mass/molar mass

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moles is therefore= 5.2 g/ 295.3 g/mol= 0.0176 moles

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