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liq [111]
3 years ago
12

8. Extinction of a species could result from

Chemistry
1 answer:
marysya [2.9K]3 years ago
5 0
Limited Genetic variability
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A sample of ammonia has a mass of 82.9 g. how many molecules are in this sample?
alina1380 [7]
The chemical formula for ammonia is NH3. So first, you need to find the molar mass of ammonia (how many grams in one mole).
N=14g
H3=3g
So one mole of NH3 is 17 grams, you can divide 82.9 grams by 17 grams to find the number of molecules. The answer should be 4.876 moles (molecules) of ammonia. Hope this helps!
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A sample of helium has a volume of 3.49 L at 741 mmHg. What would be the volume if the pressure
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P1: 741 mmHg

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Compare a mixture and a compound. How are they alike?
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