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3 years ago

What is the volume of 90.0 g of ether if the density of the ether is 0.70 g/mL?

Chemistry

1 answer:

natali 33 [55]3 years ago

5 0

Mass = 90.0 g

Density = 0.70 g/mL

Volume = in mL ?

D = m / V

0.70 = 90.0 / V

V = 90.0 / 0.70

V = 128.57 mL

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Based on the three formulas shown, use one of them to solve for the purple yellow and red box and explain how you did it.

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T = -236.733 °C(yellow)

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<h3>Further explanation </h3>

Some of the laws regarding gas, can apply to ideal gas (volume expansion does not occur when the gas is heated),:

Boyle's law at constant T, P = 1 / V
Charles's law, at constant P, V = T
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In general, the gas equation can be written

$\large {\boxed {\bold {PV = nRT}}}$

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R = gas constant = 0.08206 L.atm / mol K

T = temperature, Kelvin

To choose the formula used, we refer to the data provided

Because the data provided are temperature, pressure, volume and moles, than we use the formula PV = nRT

Purple box

T= 10 +273.15 = 373.15 K

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V=8.3 L

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A sample of a pure compound that weighs 60.3 g contains 20.7 g Sb (antimony) and 39.6 g F (fluorine). What is the percent compos

Volgvan

Answer:

The percent composition of fluorine is 65.67%

Explanation:

Percent Composition is a measure of the amount of mass an element occupies in a compound. It is measured in percentage of mass.

That is, the percentage composition is the percentage by mass of each of the elements present in a compound.

The calculation of the percentage composition of an element is made by:

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In this case, the percent composition of fluorine is:

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<u><em>The percent composition of fluorine is 65.67%</em></u>

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