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Marianna [84]
3 years ago
7

The element with 8 electrons in its 3d sublevel is a. O. b. Ne. c. Ar. d. Ni.

Chemistry
2 answers:
Lana71 [14]3 years ago
7 0

NI nickel atomic number 28 i took the test

Evgesh-ka [11]3 years ago
5 0

The element with 8 electrons in its 3d sublevel is Ni, Nickel. The answer is letter D. The rest of the choices do not answer the question above. 

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Olegator [25]
Looks to me like C and O are virtually equal and H is double those, so:

CH_20, which is the empirical formula for carbohydrates.
6 0
3 years ago
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For the reaction NH4NO3 (s) → N2O (g) + 2H2O (l), you decompose 1 mole NH4NO3 and only get 0.75 moles of N2O. The percent yield
attashe74 [19]

Answer:

The answer to your question is False.

Explanation:

Data

1 mole of NH₄NO₃

0.75 moles of N₂O

Percent yield = 25%

Chemical reaction

               NH₄NO₃   ⇒   N₂O  +  2H₂O

Process

1.- Determine the theoretical yield

              1 mol NH₄NO₃ ------------- 1 mol of N₂O

2.- Calculate the percent yield

             Percent yield = Actual yield / Theoretical yield  x 100

-Substitution

              Percent yield = 0.75 / 1 x 100

-Simplification

              Percent yield = 0.75 x 100

-Result

              Percent yield = 75%

Conclusion

False, the actual percent yield is 75%

5 0
3 years ago
Which is NOT a control in the following experiment?: An experiment was performed to determine how the amount of coffee grounds c
Alexandra [31]

Answer:

The same kind of coffee, the same coffee maker, the same amount and type of water, and the same electrical sources were used.

Explanation:

7 0
3 years ago
Please help...<br> CaS cation and anion<br> ZnCl2 cation and anion<br> Cu2CrO4 cation and anion
Anvisha [2.4K]

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Explanation:Simple ions:  

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7 0
2 years ago
HELP ME PLEASE!!!!
liq [111]

Answer:

1.D

2.A

3.C

4.A

Explanation:

6 0
3 years ago
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