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Katarina [22]
3 years ago
5

Help and explain step by step if you can!

Chemistry
1 answer:
Leona [35]3 years ago
4 0

Answer:

the third one

Explanation:

if you look at it mathematically its the one that makes the most sense

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UNO [17]

Stored mechanical energy is energy stored and awaiting to be used and mechanical energy is the energy that was stored being used.

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3 years ago
PLS ANSWER FAST AHAH<br><br> distilled water is a pure substance <br> true or false ?
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Answer:

True

Explanation:

If you see distilled water, it's a pure substance. That means that there are only water molecules in the liquid. A mixture would be a glass of water with other things dissolved inside, like one of those powders you take if you get sick or Kool-Aid.

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Jon rides his bike for 10 minutes and travels 5 km. What is Jon's average speed?
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Answer:

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Explanation:

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3 years ago
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Answer:

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From the question, the hydrogen ion concentration is given as 0.71M, therefore

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The atomic number is equal to the number of protons in an atom's nucleus. Hydrogen's atomic number is 1 because all hydrogen atoms contain exactly one proton.

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