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icang [17]
3 years ago
7

Why is the separation of waste rock before mining so important?​

Chemistry
1 answer:
Ivanshal [37]3 years ago
8 0

Answer:

because the minerals in the rock can't be used until they are separated

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In the reaction N2 + 3H2 → 2NH3, what is the mole ratio of hydrogen to nitrogen?
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Answer: The mole ratio of hydrogen to nitrogen is 3 mole: 1 mole, 3:1

Explanation:

•Mole ratios are determined using the coefficients of the substances in the balanced chemical equation. •Each coefficient represents the number of mole of each substance in the chemical reaction.

•The mole ratio can be determined by first writing out a balanced chemical equation for the reaction.

For this reaction the balanced chemical equation is

N2(g) + 3H2(g) ----> 2NH3(g)

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From the equation we can see that 1 mole of N2(g) reacts with 3 moles of H2(g) or 3 moles of H2(g) react with 1 mole of N2(g) to produce 2 moles of NH3(g).

Therefore, the mole ratio of hydrogen to nitrogen is 3 mole: 1 mole, 3:1

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Which of the following is a physical property of a substance?? A. Combustion B. Corrosion C. Tendency to tarnish D. Solubility
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True or False: Natural Gas is a renewable resource?
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