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balu736 [363]
2 years ago
7

A student conducts an experiment by placing a wooden stick in a cup of sugar solution. Over the next few weeks, sugar crystals f

orm on the stick and increase in size. The student concludes that the resulting crystals must be alive because they grow.
Chemistry
1 answer:
Ipatiy [6.2K]2 years ago
8 0

Answer: In order to be alive there must be cells present and since sugar does not contain cells it is not alive.

Explanation:

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evaporation

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A 118-ml flask is evacuated and found to have a mass of 97.129 g. when the flask is filled with 768 torr of helium gas at 35 ?c,
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The full question asks to decide whether the gas was a specific gas. That part is missing in your question. You need to decide whether the gas in the flask is pure helium.

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From pV = nRT you can find n, after that using the mass of gass in the flask you use MM = mass/moles.

1) From pV = nRT, n = pV / RT

Data:
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2,9 mmol × \frac{1mL}{2,0mM} = <em>1,45 mL</em>

<em></em>

I hope it helps!

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