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zzz [600]
3 years ago
10

During evaporation, the volume of the liquid decreases and the liquid becomes what??? ​

Chemistry
1 answer:
oee [108]3 years ago
4 0

Answer:

Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor. ... Once water evaporates, it also helps form clouds

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First: Calculate the number of moles of Kool-Aid powder needed to make 100mL of a 0.1M solution.
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For this question, we can use the molarity formula, which is as follows:

Molarity= \frac{moles}{Liters}

We know that we want a 0.1M solution in 100 mL, so we can plug those into the equation to find the number of moles required:

0.1M= \frac{moles}{0.1L}
moles=0.01

So now we know that the number of moles of the Kool-Aid powder is 0.01. We also know that the chemical formula for this powder is C_{12}  H_{22}  O_{11}.

We can find the molar weight of this powder by taking the atomic weight from the periodic table and multiply it by the number of atoms in the compound. Let's find the molar weight of the powder:

Find the atomic weight of carbon:

C=12.01 g

There are 12 C's, so we multiply by 12:

12.01g*12=144.12g

Then we have 22 H's, each having an atomic weight of 1.008g:

1.008g*22=22.18g

And finally there are 11 O's, each with an atomic weight of 15.99g:

15.99g*11=175.89g

Then we add up all of the weights:

144.12g+22.18g+175.89g=342.19g  -> So we know that the molar weight of the Kool-Aid powder is 342.19g.

Now we can find the amount of grams that we need for the desired solution as follows:

\frac{342.19g}{1mol}* \frac{0.01mol}{1}=3.42g

So now we know that we need 0.01 moles of the powder, and we need 3.42g of the powder to make the desired solution.
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