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Brilliant_brown [7]
4 years ago
8

Select the phrase that completes each statement. • Honey is . • Grape juice is • Sand on the beach is . • A mixture of carbon di

oxide and nitrogen gases is • Rubbing alcohol is
Chemistry
1 answer:
Harman [31]4 years ago
5 0

Answer:

a mixture and  solution  

•      a mixture and a solution  

•      a mixture but not a solution  

•       a mixture and a solution  

•  mixture and a solution

Explanation:

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PbO2 + 4HCl --- PbCl2 + Cl2 + 2H2O who buys electrons and who loses electrons?​
SIZIF [17.4K]

<u>Answer:</u> Electrons are taken up by PbO_2 and they are lost by HCl

<u>Explanation:</u>

Redox reaction is defined as the reaction in which oxidation and reduction take place simultaneously. It is also called the reaction where the exchange of electrons takes place.

An oxidation reaction is defined as the reaction in which a chemical species loses electrons takes place. In this reaction, the oxidation state of a substance gets increased.

A reduction reaction is defined as the reaction in which a chemical species gains electrons takes place. In this reaction, the oxidation state of a substance gets reduced.

For the given chemical reaction:

PbO_2+4HCl\rightarrow PbCl_2+Cl_2+2H_2O

The half-reactions for this redox rection follows:

<u>Oxidation half-reaction:</u>  2HCl\rightarrow ClO_2 + 2e^-

<u>Reduction half-reaction:</u>  PbO_2+2e^-\rightarrow PbCl_2

Hence, electrons are taken up by PbO_2 and they are lost by HCl

8 0
3 years ago
Until the 1960s, it was widely believed that the Moon was made of material that was flung off Earth during a time when it was ra
zysi [14]

E

All the other chices give evidence that supports that hypothesisthat the Moon was made of material that was flung off Earth during a time when it was rapidly spinning.

Explanation:

There is an enormous amount of similarities between the minerals in the moon rocks and the rocks on earth, except that for some minerals, like potassium, their quantities are higher on the earth than on the moon.

However, there is still supports for the evidence (by the other choices) that the moon was made from a piece of earth ejected from asteroid impact in primordial earth.Explanation:It’s believed that more than 3.5 billion years during the formation of earth and before it had cooled there were frequent asteroid impacts and one enormous collision ejected a large piece of molten earth into space but within earth’s gravity influence. This piece formed the moon. Evidence of asteroid impacts are frozen in time on the moon surface thanks to the fact that the moon has no atmosphere or tectonic plates movements that wipe off this ‘evidence’.

Learn More:

brainly.com/question/12718187

#LearnWithBrainly

8 0
3 years ago
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Acids react with
Verdich [7]
Water is produce bases and says
6 0
3 years ago
Which of the following is a redox reaction? (HELP ASAAAP)
Marianna [84]

Answer:

D

Explanation:

Al is a reducing agent because it removes Oxygen from another compound

Mno2 is an oxidizing agent

4 0
3 years ago
Explique porque o ácido benzóico é mais ácido que a água
STatiana [176]
Que voy a saber yo por Dios deja el fastidio
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4 years ago
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