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Nataly [62]
3 years ago
9

I need help, please answer

Chemistry
2 answers:
Ivanshal [37]3 years ago
8 0

Answer:

Mrs girl I'm sorry I don't know

I just need the points

djyliett [7]3 years ago
5 0

Answer:

it explodes

Explanation:

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What volume of water (solute) (d = 1.00 g/mL) should be added to 600. mL of ethanol (solvent, C2H5OH) in order to have a solutio
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Answer: Volume of water to be added is 116 ml.

Explanation:

Elevation in boiling point is given by:

\Delta T_b=i\times K_b\times m

\Delta T_b=T_b-T_b^0=(95.0-78.4)^0C=16.6^0C = elevation in boiling point

i= vant hoff factor = 1 (for non electrolyte)

K_b =boiling point constant = 1.22^0C/m

m= molality

\Delta T_b=i\times K_b\times \frac{\text{mass of solute}}{\text{molar mass of solute}}\times \text{weight of solvent in kg}}

Density of solvent =\frac{\text {mass of solvent}}{\text {Volume of solvent}}

0.789g/ml=\frac{\text {mass of solvent(ethanol)}}{600ml}

{\text {mass of solvent(ethanol)}=473.4g=0.4734 kg    (1kg=1000g)

Mass of solute (water) = x g

16.6^0C=1\times 1.22\times \frac{x}{18g/mol\times 0.4734kg}

x=116g

Density of solute =\frac{\text {mass of solute}}{\text {Volume of solute}}

1.0g/ml=\frac{116g}{\text {Volume of solute(water)}}

{\text {Volume of solute(water)}}=116ml

Thus the volume of water to be added is 116 ml.

6 0
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Lesson 13 does a chemical reaction destroy matter answer key
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<span>No. A chemical reaction does not destroy matter but it can convert matter into another form or into a substance with a different molecular structure. Matter can even be converted into energy in a nuclear reaction.</span>
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Explanation:

Nuclear fission : it a process in which large unstable nucleus splits into stable smaller stable nuclei. During this spilling large amount of energy is released.

The massive amounts of destructive energy is released during nuclear bomb explosion. The source of this energy, is the splitting of larger nucleus into smaller nuclei which releases large amount of energy.

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