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Anettt [7]
3 years ago
6

The mass of an electron is close to: A. 0.00055u. B. 0.05u. C. 10-10 u. D. 0.0001u

Chemistry
2 answers:
ratelena [41]3 years ago
8 0

Answer:

ignition itxoyxuxgxitxog ignition otd9xots84dizts8ot itsot itzot ist lgotxpg 9xoy x95clh

Explanation:

cuz

Debora [2.8K]3 years ago
7 0

Answer:

A. 0.0005u

Explanation:

The mass of an electron in amu = 9.1*10-311.66*10-27=0.0005u.

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I feel like it is important, because it is always nice to learn about new things and keep your mind open, to expand your knowledge.
6 0
3 years ago
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
The Sun heats land and water, how is this related to wind and ocean currents?
Yuki888 [10]

Answer:

"The sun warms up parts of the oceans. Warm waters rise just like warm air rises. So, as the warmer ocean waters begin to rise in a particular area, the cooler ocean waters from a different area will move in to replace the warmer ocean waters, and this creates our ocean currents."

Explanation:

Hope this is helpful :)

8 0
3 years ago
The charge on a magnesium ion is +2. When it formed an ionic compound with another element, it lost 2... what?
Naya [18.7K]

Answer:  electrons

Explanation:  Electrons have a charge of -1 each.  If two left, the remaining atom would have a positive +2 change.

6 0
3 years ago
Why do neutral atoms form ions?
Marina86 [1]
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8 0
3 years ago
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