Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes leading to irreversible inactivity of these enzymes. If the amount of mercury in a polluted lake is 0.4 μg Hg/mL, what is the total mass in kilograms of mercury in the lake? (The lake has a surface area of 100 mi2 and an average depth of 20 ft.)

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A: Please see the attached image for the solution.  If there are queries or if the image is not…

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Q: A 330 mg piece of gold (density = 19.3 gcm3) is hammered into a sheet of gold leaf that has a length…

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