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almond37 [142]
3 years ago
7

About one-third of the toxic metal, mercury (Hg), is released into the air from natural sources, such as rocks, soil, volcanoes,

and the ocean. The remaining two-thirds come from human activities such as ____. a. airplane exhaust b. gold mining c. livestock farming d. automobile exhaust e. plastic recycling
Chemistry
1 answer:
Stolb23 [73]3 years ago
7 0

Answer:

Two-third of the toxic metal, mercury comes from gold mining.

Explanation:

During gold mining small pieces of gold which are within  the soil are separated with the help of mercury. Both gold and mercury are mixed and they forms amalgam. Further gold can be extracted by vaporizing the mercury, thus releasing it into air and contributing to two-third of the air pollution by human activities.

Therefore (d) gold mining is the correct answer.

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Answer:

3

Explanation:

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What does Newton's first law of motion state ​
Alenkasestr [34]

Answer:

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3 years ago
Determine Δngas for each of the following reactions:(b) 2H₂(g) + O₂(g) ⇄ 2H₂O(l)
elixir [45]

2H₂(g) + O₂(g) ⇄ 2H₂O(l)

Δngas = 0 - (2 +1)

           = -3

<h3>What is Δngas?</h3>

The number of moles of gas that move from the reactant side to the product side is denoted by the symbol ∆n or delta n in this equation.

Once more, n represents the growth in the number of gaseous molecules the equilibrium equation can represent. When there are exactly the same number of gaseous molecules in the system, n = 0, Kp = Kc, and both equilibrium constants are dimensionless.

<h3>Definition of equilibrium</h3>

When a chemical reaction does not completely transform all reactants into products, equilibrium occurs. Many chemical processes eventually reach a state of balance or dynamic equilibrium where both reactants and products are present.

Learn more about Equilibrium

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5 0
1 year ago
The moon's gravity pulls on everything on the earth, including the _____.
KengaRu [80]

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4 years ago
Why do many metal ions produce acidic solutions when dissolved in water?
lakkis [162]
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3 years ago
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