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DedPeter [7]
4 years ago
12

Ice floats on water. For most other substances, however, the solid sinks in the liquid.

Chemistry
1 answer:
svetoff [14.1K]4 years ago
7 0

Answer:The solid is less dense than the liquid

Explanation:

Ice is less dense than water because of the crevices or spaces in the lattice structure of ice. Liquid water has a much greater density than solid water because its molecules are more compactly packed than in ice. Ice has large spaces between the hydrogen bonded water molecules hence less density than the liquid. Being less dense than !liquid water, it floats on water.

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Na +H₂O- NaOH +H₂ balance
Whitepunk [10]

Hey there!

Na + H₂O → NaOH + H₂

First, balance O.

One on the left, one on the right. Already balanced.

Next, balance H.

Two on the left, three on the right. Let's add a coefficient of 2 in front of NaOH and a coefficient of 2 in front of H₂O, so we have 4 on each side.

Na + 2H₂O → 2NaOH + H₂

Lastly, balance Na.

One on the left, two on the right. Add a coefficient of 2 in front of Na.

2Na + 2H₂O → 2NaOH + H₂  

This is our final balanced equation.

Hope this helps!

7 0
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Write the molecular formula in the of the following compounds.
tensa zangetsu [6.8K]
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sodium peroxide - Na202
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3 years ago
Compare and contrast between nuclear fission and fusion
Drupady [299]

Both create energy. Both require atoms.

Fission is ripping the atoms apart, fusion is forcing them together. Fission takes less energy because it's easier to rip unstable atoms apart but pushing two atoms that have similar charges together is extremely hard. Fission is currently mainstream on earth, but fusion is known for taking place within stars.

8 0
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Answer:

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Explanation:

I THINK. HOPE THIS HELPS

3 0
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Answer:

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Explanation:

the tectonic plates rub together sending shockwaves

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