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AfilCa [17]
3 years ago
11

A student needed to dissolve a substance that she knew was soluble in water. according to the chart, which other solvent would m

ost likely dissolve the substance?

Chemistry
1 answer:
Dmitry [639]3 years ago
8 0
The chart is attached below and the options are as follow,

A Benzene

B Methanol

C Hexane

D Octane

Answer:
             Option-B (Methanol) is the correct answer.

Explanation:
                    As we know that the substance given to student is soluble in water. Therefore, those substances which are soluble in water are polar in nature because water is polar in nature and Like Dissolves Like.
                    Hence, in chart it can easily be seen that Methanol is also polar in nature due to presence of -O-H (polar) bond. So, the substance will dissolve in it.

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Iron 3 oxide and carbon react to form iron and carbon dioxide. Balance the equation.
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Answer:

2 Fe(iii)2O3 + 3 C ==> 2 Fe  + 3 CO2

Explanation:

First of all, you have to translate the words into an equation.

Fe(iii)2O3 + C ==> Fe  + CO2

The easiest way to tackle this is to start with the Oxygens and balance them. They must balance by going to the greatest common factor which is 6. So you multiply the molecule by whatever it takes to get the Oxygens to 6

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Now work on the irons. There 2 on the left and just 1 on the right. So you need to multiply the iron by 2.

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Finally it is the turn of the carbons. There are 3 on the right, so you must make the carbon on the left = 3

2 Fe(iii)2O3 + 3 C ==> 2 Fe  + 3 CO2

And you are done.

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Western regions Facts
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Hope this helps :)

Have a great day!
7 0
3 years ago
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