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Evgesh-ka [11]
2 years ago
15

Pls help nowwJust want to see who's the smartest herepromise to tag u as brainliest​

Chemistry
1 answer:
sveta [45]2 years ago
4 0

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

1. The equation representing the equation is ~

\mathrm{Na + Cl\rightarrow NaCl}

The given reaction is a <u>redox reaction</u> because there's a <u>transfer of electron</u> from <u>Sodium</u> (Na) to <u>chlorine</u> (Cl)

where sodium is <u>oxidized</u> (due to loss of electron) and chlorine get <u>reduced</u> (due to gain of electron).

2. <u>Sodium</u> is a <u>highly reactive</u> element which belongs to the 1st group of periodic table, hence it can catch fire if it is kept free in atmosphere. so in order to prevent that it is stored in <u>kerosene</u> oil, which doesn't let Sodium come in contact with air .

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Explanation:

The chart is missing so there is no way to tell what does the graph show.

Yet, I can help you because I can explain the status of each statement of the choices. As you will see there is only one possibility..

<span>1) Temperature can change the solubility of a solute.

Yes, temperature definetly can, and mostly do, modify the solubility of a solute.

You can search any chart of solubility and will find that.

I can give you two examples:

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b) Carbon dioxide gas: the soft drinks have CO₂ molecules dissolved in it.
 
The higher the temperature of the soft drink the less the amount of CO₂(g) that can be dissolved. That is why the soda bottling plants cool the beverage before adding the CO₂(g).

2) </span><span>Temperature has no affect on the solubility of a solute.

Since this is the opposite to the first statement and the first is true, this is false.

3) Salt has a greater solubility than sugar.

False.

This is an empirical result, which you cannot predict theoretically. So you need to see at the data either in a table or in a chart. Else you can test it at home. After the empirical data are shown it results that more grams of sugar can be dissolved in water compared to salt.

That is something you ca see in a chart or you can prove by yourself.

4) Nitrite salt has a greater solubility than sugar. </span>

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Looking at some data you can find that sodium nitrite solutiliby is aroun  70 - 100 g/10 g while sugar (sucrose) solutiblity is around 180 - 235 g/ 100 g.

8 0
3 years ago
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