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Elis [28]
3 years ago
12

All work stations and apparatuses must be ____ at the end of the lab experiment or work day.

Chemistry
1 answer:
marishachu [46]3 years ago
7 0
C. Cleaned should be the answer
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Which of the following pairs of compounds would be most easily separated by thin layer chromatography: n-octyl alcohol and 1-oct
Naddika [18.5K]

Answer:

B. n-octyl alcohol and 1-octene

Explanation:

Thin-layer chromatography (TLC) is a chromatography technique used to separate non-volatile mixtures. The principle is that different compounds in the sample mixture travel at different rates due to the differences in interactions with stationary phase and due to the differences in solubility in the solvent. The principal chemical property for separation using this technique is molecular polarity

You can intuit than hexadecane and octadecane don't have big polarity differences, also chlorobenzene and bromobenzene haven't.

An alcohol as n-octyl alcohol has different polarity than an alkene as 1-octene.

Thus, using  thin layer chromatography is most easy to separate:

<em>B. n-octyl alcohol and 1-octene </em>

<em></em>

I hope it helps!

<em></em>

6 0
4 years ago
Water has a higher specific heat index than other common materials, so it takes a lot of energy to raise the temperature of wate
Maurinko [17]

Answer: Areas surrounded by water would have less of a change in temperature

throughout the year.

Explanation: Water has a higher specific heat index so it's temperature will be slow to rise. Water also holds heat longer than most material hence areas sorrounsing water will have less temperature change throughout the year.

6 0
4 years ago
Which element is classified as a noble gas? (1) sulfur (3) argon (2) oxygen (4) nitrogen
valentina_108 [34]
The answer is argon, hope this helps!

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Maybe you can try to reduce the amount of electricity you use, that should be easy to fill out :)
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Which word describes the amount of matter an object contains?
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