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Virty [35]
4 years ago
15

In a laboratory experiment, John uses a mesh to separate soil particles from water. Which technique of separation is he using?

Chemistry
1 answer:
Aneli [31]4 years ago
3 0
Salutations!

<span>In a laboratory experiment, John uses a mesh to separate soil particles from water. Which technique of separation is he using?

The technique that John is using is the filtration technique. Filtration is a technique to separate the solid which is insoluble from the liquid. For instance: Sand and water, sand is insoluble, thus it stays in the filter paper, while the water proceeds through the filter paper.

Hope I helped :D</span>
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Answer: At equilibrium , there are 0.274 moles of Br_2

Explanation:

Moles of  H_2 = 0.682 mole

Moles of  Br_2 = 0.440 mole

Volume of solution = 2.00 L

Initial concentration of H_2 = \frac{0.682}{2.00}=0.341 M

Initial concentration of Br_2 =  \frac{0.440}{2.00}=0.220 M

Equilibrium concentration of H_2 = \frac{0.516}{2.00}=0.258 M

The given balanced equilibrium reaction is,

             H_2(g)+Br_2(g)\rightleftharpoons 2HBr(g)

Initial conc.   0.341 M    0.220 M        0 M    

At eqm. conc.   (0.341-x) M   (0.220-x) M   (2x) M

Given : (0.341-x) M = 0.258 M

x= 0.083 M

Thus equilibrium concentartion of Br_2 = (0.220-0.083) M = 0.137 M

Thus moles of Br_2 at equilibrium = 0.137M\times 2.00L=0.274mol

At equilibrium , there are 0.274 moles of Br_2

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