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3 years ago

Celina has a water sample that’s contaminated with salt and microorganisms. Which method should she use to purify the water?

Chemistry

2 answers:

kap26 [50]3 years ago

7 0

Answer: Second option is correct.

Explanation:

Filtration is the method of removing impurities solid particles from liquid.

Distillation is the method of removing impurities in a boiling liquid mixture.

Osmosis is the movement of water from low concentration to high concentration through a plasma membrane.

Reverse osmosis is the method of purification of water to remove ions and unnecessary molecules from drinking water.

We have given the situation that "There is a water sample contaminated with salt and micro organisms."

We need to purify the water.

Filtration is the best method to purify the water and remove the salt and micro organisms.

As there is slight difference between filtration and distillation.

In distillation we need to boil the water , so there heat is needed for this whereas in filtration, it just remove solid from fluid without being heated.

Hence, Second option is correct.

Alik [6]3 years ago

3 0

B) filtration
(hope this helps) ~A

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Answer : A nucleotide is composed of a phosphate group and a nitrogen-containing base.

Explanation :

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It is composed of three sub-unit molecules which are a nitrogenous base, a five-carbon sugar and one phosphate group.

Nucleotide forms covalent bonds with other nucleotide for the formation of the nucleic acid strand.

Hence, a nucleotide is composed of a phosphate group and a nitrogen-containing base.

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3 years ago

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Answer:

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3 years ago

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Answer:

$HBr + KOH → KBr + H _{2} O$

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3 years ago

How do the chemical properties of the halegons compare to those of the noble gases

saul85 [17]

Answer:

The halogens are extremely reactive, whilst the noble gases are mainly inert.

Only some noble gases tend to form compounds, such as xenon and krypton. However, some like helium, almost have no compounds at all. Noble gases also have octet rule shells, which causes the little reactivity associated with them. To form bonds with noble gases, a lot of energy is required to form those bonds. Halogens, on the other hand, are extremely reactive. Compounds like chlorine and fluorine must be stored carefully, as they will oxidise anything that they can find, just to get one extra electron to get an octet configuration.

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3 years ago

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At one point in the Bike Trip described in the passage, you traveled 1 kilometer in 0.1 hours. What was your speed during that t

stealth61 [152]

Answer:

v = 10 km/h

Explanation:

Step 1: Given data

Distance traveled in the Bike Trip (d): 1 km

Time elapsed in the Bike Trip (t): 0.1 h

Step 2: Calculate the speed in the Bike Trip

The speed (v) is equal to the distance traveled divided by the time elapsed. We will use the following mathematical expression.

v = d/t

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