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3 years ago

Give reason:

Chemistry

1 answer:

Darya [45]3 years ago

6 0

Answer:

a.The glass beads present in the fractionating column provide a large surface area for hot vapours to cool and condense repeatedly

b.Crystallization is better than evaporation because some solids can decompose or can get burned during evaporation

Explanation:

a.The fractionating column is fitted in the neck of the distillation flask containing the mixture of liquids to be separated

b. Also in some cases impurities can remain dissolved in the solution while evaporation which cannot be removed even after filtration

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4. Who has the most sensitive taste buds? adults babies teenagers the elderly

jeka57 [31]

Answer:

Taste bufs

Explanation:

May be teenager or adult is the most probable answer because teenager and adult are fully developed species of human so they can have most sensitive taste bud

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2 years ago

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Which sphere is dependent on all the other spheres in order to exist?

egoroff_w [7]

Answer:

biosphere

Explanation:

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3 years ago

Someone plz help me !! Science Or Bias?

Artist 52 [7]

1st one is Science and the 2nd one is Bias

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3 years ago

On which of the following objects will the earth exert a greater gravitational pull than on a baseball?

dem82 [27]

Answer:

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2 years ago

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Using the following reaction:

Romashka-Z-Leto [24]

Answer:

Mn is the oxidizing agent.

N is the reducing agent.

Explanation:

Hello!

In this case, according to the undergoing chemical reaction, it is seen that the manganese in KMnO4 has an oxidation state of 7+, in MnSO4 of 2+ and nitrogen in KNO2 is 3+ and in KNO3 is 5+; thus we have the following half-reactions:

$Mn^{7+}+5e^-\rightarrow Mn^{2+}\\\\N^{3+}\rightarrow N^{5+}+2e^-$

Thus, since manganese is undergoing a decrease in the oxidation state, we infer it is the oxidizing agent whereas nitrogen, undergoing an increase in the oxidation state is the reducing agent.

Best regards!

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2 years ago