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sleet_krkn [62]
3 years ago
7

I NEED HELP PLEASE !!!!!

Chemistry
1 answer:
kolbaska11 [484]3 years ago
4 0

Answer: jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

Explanation:

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6. Explain the impact on fresh water of:
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Fresh water pollutants  are substances which pollute fresh water and  industrial waste, is most harmful fresh water pollutant to man and aquatic organisms.

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Pollutants are substances which cause harm when they are present in the environment.

Pollutants include chemicals such as petroleum and material such as sewage.

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B. What useful functions do oxidation numbers
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Explanation:

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c. What is the name given to the number of  molecules in 1 mole?

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21. a. What is the molar mass of an element?

This is the mass of an element divided by the number of moles.

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The chemical equation below shows the burning of magnesium (Mg) with oxygen (O2) to form magnesium oxide
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64

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