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ludmilkaskok [199]

2 years ago

12

A

1 answer:

DIA [1.3K]2 years ago

5 0

V_1=49.8mL
T_1=18°C=291K
T_2=83°C=356K

Using Charles law

$\\ \sf\longmapsto V_1T_2=V_2T_1$

$\\ \sf\longmapsto V_2=V_1T_2\div T_1$

$\\ \sf\longmapsto V_2=\dfrac{49.8(356)}{291}$

$\\ \sf\longmapsto V_2=\dfrac{17728.8}{291}$

$\\ \sf\longmapsto V_2=60.9mL$

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Explanation:

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We do not involve arrows when writing dot electron structures for compounds. The valence electrons of magnesium ought not to be written together because they are not a lone pair, rather they are two unpaired electrons. The use of an arrow suggests a coordinate covalent bond which is not the case here.

The correct lewis structure for MgCl2 is shown in the image attached to this answer.

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pH or pOH is the measure of acidity or alkalinity of a solution.

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Putting in the values:

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As pH is more than 7, the solution is basic.

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As pH is more than 7, the solution is basic.

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Putting in the values:

$pOH=-\log[1.0\times 10^{-9}]$

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$pH+pOH=14.0$

$pH=14.0-9.00=5.00$

As pH is less than 7, the solution is acidic.

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