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Serga [27]
3 years ago
15

Why can evaporation be used to separate a mixture? Check all that apply.

Chemistry
2 answers:
gogolik [260]3 years ago
6 0

A C F is the answer, just did the test :D good luck


vlada-n [284]3 years ago
3 0
F because this is good for separating a liquid from a solution. For example, water can be separated from salty water by simple distillation. This method works because the water evaporates from the solution, but is then cooled and condensed into a separate container. The salt does not evaporate<span> and so it stays behind.</span>
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(a) The number of molecules contained by the balloon at the given condition is 6,438.97 moles.

(b) The mass of air in the balloon is 186.73 kg.

The given parameters;

  • <em>volume of the balloon, V = 1500 m³</em>
  • <em>temperature, T = 10⁰C = 273 + 10 = 283 K</em>
  • <em>pressure, = P = 10.1 kPa = 10,100 Pa</em>

The number of molecules contained by the balloon at the given condition is calculated as follows;

PV = nRT

where;

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n = \frac{PV}{RT} \\\\n = \frac{10,100 \times 1500}{8.314 \times 283} \\\\n = 6,438.97 \ moles

The mass of air in the balloon is calculated as;

n = \frac{m}{M} \\\\m = nM\\\\m = 6,438.97\ moles \ \times \ 29 \ g/mol\\\\m = 186.73 \ kg

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