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sergejj [24]
3 years ago
7

HELP! 10 pts!! || Which does NOT describe a water molecule?

Chemistry
1 answer:
AVprozaik [17]3 years ago
5 0

Answer:

C.)

Explanation:

Hope this helps:)

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4. What are three sources of environmental contaminants?
FinnZ [79.3K]

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5 0
2 years ago
A 50 kg object _____.
stich3 [128]

Answer:

will have more mass the moon than the earth

Explanation:

hope this helps

8 0
3 years ago
Calculate the frequency of electromagnetic wave with the wave length 344nm ( hint: use dimensional analysis)
Svetlanka [38]
Frequency = speed of light
                      ---------------------------
                        wavelength 
 
                   =        3 x 10^8
                      ------------------------
                          344 x 10^-9
 
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Hope this helps!



5 0
3 years ago
Calculate the number of ammonia molecules in 3.9 g.
disa [49]
•3.9g of ammonia
•molar mass of ammonia = 17.03g/mol

1st you have to covert grams to moles by dividing the mass of ammonia with the molar mass:

(3.9 g)/ (17.03g/mol) = 0.22900763mols

Then convert the moles to molecules by multiplying it with Avogadro’s number:

Avogadro’s number: 6.022 x 10^23


0.22900763mols x (6.022 x 10^23 molecs/mol)
= 1.38 x 10^23 molecules
6 0
3 years ago
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