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stiks02 [169]
3 years ago
12

QUESTION 3

Chemistry
1 answer:
aev [14]3 years ago
4 0
Bacteria can’t live without humans
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PLS HELP: CHEMISTRY
user100 [1]

Answer:

3.59x10^21 molecules

Explanation:

1mole of a substance contains 6.02x10^23 molecules.

Therefore, 1mole of C8H18 will also contain 6.02x10^23 molecules

1mole of C8H18 = (12x8) +(18x1) = 96 + 18 = 114g.

1mole (i.e 114g) oh C8H18 contains 6.02x10^23 molecules.

Therefore, 0.68g of C8H18 will contain = (0.68 x 6.02x10^23)/114 = 3.59x10^21 molecules

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2 years ago
ANSWER FAST PLZ 25 POINTS!!!!!!!!!!!!!!!
sp2606 [1]

Answer:

The answer is A, if im not mistaken

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Which of the following environmental risks is most likely to lead to digestive health issues?
algol13


Meat contamination because humans do not eat air or fertilizer so meat contamination is the only logical answer.


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marishachu [46]

Answer: 129.93577

Explanation:

There-

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In which one of the following branches of natural science are properties of materials studied?
Leya [2.2K]

Answer:

Chemistry maybe

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