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DerKrebs [107]
3 years ago
14

A girl throws a rock into a pond. A leaf floating on the pond bobs up and down but does not change location on the pond's surfac

e. Why not?
Chemistry
1 answer:
sertanlavr [38]3 years ago
6 0

This is due to the difference in density. The rock is denser than the leaf. And also, the rock is denser than the liquid in the pond. If the material is denser than the other material, it will sink. The same holds true for the rock, it sinks. But when the material is less dense than the other material, it floats. And it holds true for the leaf, it floats.

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A fuel tank holds 22.3 gallons of gasoline. If the density is 0.8206 g/mL, what is the mass in kilograms of gasoline in a full t
7nadin3 [17]

Answer:

m=69.3kg

Explanation:

Hello!

In this case, since the density is computed by dividing the mass of the substance by its occupied volume (d=m/V), we first need to realize that 0.8206 g/mL is the same to 0.8206 kg/L, which means we first need to compute the volume in L:

V=22.3gal*\frac{3.78541L}{1gal}=84.415L

Then, solving for the mass in d=m/V, we get m=d*V and therefore the mass of gasoline in that full tank turns out:

m=0.8206g/L*84.415L\\\\m=69.3kg

Best regards!

8 0
3 years ago
How to balance the question?​
umka21 [38]

Answer:

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I hope I helped you^_^

4 0
3 years ago
If sugar contains 41.86 carbon and 6.98 hydrogen what percentage of sugar is oxygen
STatiana [176]
Sugar is 51.16% oxygen because 41.86 + 6.98 = 48.84, minus that from 100 gets 51.16.
8 0
3 years ago
Please help ASAP!! please someone!
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4 0
3 years ago
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Arlecino [84]
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7 0
3 years ago
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