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Gnom [1K]
3 years ago
15

A line graph shows the relationship between three variables true or false

Chemistry
2 answers:
AVprozaik [17]3 years ago
8 0
Im gonna say its false becuase a line graph is<span> also known as a </span>line<span> chart, is a type of chart used to visualize the value of something over time. hope it helps :)</span>
Nookie1986 [14]3 years ago
6 0
The answer would be B) False cause a line graph only shows ''two'' variables, not three.
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When 240 mg of a certain molecular compound X are dissolved in 35.0 g of dibenzyl ether ((C6H5CH2)2O), the freezing point of the
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Answer: MM = 16.55 g/mol

Explanation: <u>Freezing</u> <u>point</u> <u>depression</u> is a phenomena that explains why adding a solute to a solvent decreases the solvent freezing point: when a substance begins to freeze, its molecules slows down and rearrange itself forming a solid. If a solute is added, the molecules from the solvent interfere in the formation of the solid. To guarantee the transformation, the solution has to cooled down even more.

Freezing point and molality concentration is related by

\Delta T=T_{f}_{(solvent)}-T_{f}_{(solution)}=K_{f}.m

where

ΔT is freezing point depression

T_{f}_{(solvent)} and T_{f}_{(solution)} are freezing point of solvent and solution, respectively

K_{f} is freezing point depression constant

m is molality concentration

<u />

Dibenzyl ether is the solvent and has the following properties: K_{f}= 6.27 and T_{f} = 3.6°C.

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m=\frac{T_{(solvent)}-T_{(solution)}}{K_{f}}

m=\frac{3.6-1}{6.27}

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<u>Molality</u> <u>concentration</u> is moles (n) of solute dissolved in a mass, in kilogram, of solvent.

m=\frac{moles}{mass(kg)}

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n = 0.415(0.035)

n = 0.0145

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n=\frac{m}{M}

M = \frac{m}{n}

m in grams

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M=\frac{0.24}{0.0145}

M = 16.55

<u>Molar mass of molecular</u><u> compound X is 16.55g/mol</u>

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3 years ago
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Vlad1618 [11]

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