Answer:
Brass is a homogenous mixture of copper and zinc
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13.6 mol of CuCl2
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A stable pH is essential for the growth of plants in soil. There are three main important things for the plant growth: (1) nutrients in soil, (2) water, and (3) carbon dioxide. A process called acid leaching may be used to remove the heavy metals which impede the growth of plants.
The correct answer is the third option. Particulate matter is the air pollutant known to affect people with a heart disease. According to research, this pollutant is associated with an increased risk of cardiovascular diseases.