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Lilit [14]
2 years ago
15

People mine zinc metal for use as an anticorrosive, skin protectant, and in electrical components. Zinc mining involves using ch

emicals to
remove the zinc from larger rocks. Demand for zinc increased over the past 35 years.
If the management of zinc mines stays the same, how will the increased demand for zinc most likely impact the environment?
O A. Global temperatures will rise because mining releases heat from Earth's Interior.
O B. Biodiversity will increase because mining speeds the release of Important minerals from rocks.
O C. The acidity of the surrounding soil and water will change because of the discharge of mine waste.
O D. Sea level will decrease substantially because the mining process requires substantial amounts of water
Chemistry
2 answers:
Klio2033 [76]2 years ago
4 0
Option C.

Since chemicals are used in the mining of zinc, a rise in mining activity would lead to more chemicals being used, which would impact the soil and water around the mines.
ankoles [38]2 years ago
3 0
C I’m pretty sure. I hope this helps
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The concentrations of the products at equilibrium are [pcl3] = 0.180 m and [cl2] = 0.250 m. what is the concentration of the rea
sineoko [7]
We have Kc = 4.2 x 10^-2 (given but missing in the question)
and When the balanced equation for this reaction is:
PCl5(g) ↔ PCl3(g) + Cl2(g)
so, according to the Kc formula:
Kc = the concentration of products / the concentration of the reactants
so, to get the concentration of the reactants in equilibrium, the concentration of the products / the concentration of the reactants should equal the Kc value which is given in the question (missing in your question).
So by substitution in Kc formula: 
Kc   = [PCl3]*[Cl2] / [PCl5]
4.2 x 10^-2 =  0.18 * 0.25 /[PCl5]
∴[PCl5] = 0.18*0.25 / 4.2x10^-2 = 1.07
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