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Komok [63]
3 years ago
13

Which profession is likely to use a radiation shield?

Chemistry
2 answers:
Sidana [21]3 years ago
5 0

Answer:

astronomer

Explanation:

just took the test :)

pantera1 [17]3 years ago
3 0
<span>Which profession is likely to use a radiation shield?
</span><span>A.)dentist
<em><u>B.)astronomer</u></em>
C.)mathematician
D.)geologist

The answer is B: Astronomer

</span>
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What two properties most affect the strength of the gravitational forces
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A sample of 19 mg of 9-fluorenone is dissolved in 5 mL of diethyl ether. The resulting organic
maks197457 [2]

Answer:

15.70mg would remain

Explanation:

Partition coefficient is used to extract or purify a solute from a solvent selectively to avoid interference from other substances. For the problem, formula is:

Kp = Concentration 9-fluorenone in ether / Concentration of solute in H₂O

After the solute, 9-fluorenone, is extracted with water, the mass that remains in ether is:

(19mg - X)

<em>Where X is the mass that now is in the aqueous phase</em>

Replacing in Kp formula:

9.5 = (19mg - X) / 5mL / (X /10mL)

0.95X = 19mg - X / 5mL

4.75X = 19 - X

5.75X = 19

X = 19 / 5.75

X = 3.30mg

That means 9-fluorenone that remain in the ether layer is:

19mg - 3.30mg =

<h3>15.70mg would remain</h3>
8 0
3 years ago
There are four major methods of purification in the chemistry laboratory. Which of the given techniques is not one of the four m
RideAnS [48]
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Sublimation

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_______ is used in the manufacture of fertilizers​
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