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3 years ago

Which orbital is the first to fill with electrons in a given principal energy level?

Chemistry

2 answers:

olasank [31]3 years ago

8 0

<h2>Answer:</h2>

The right option is (B) S orbital

<h2>Explanation:</h2>

Each orbital can hold two electrons. One spin-up and one spin-down. The first principal energy level contains only an s sublevel; therefore, it can hold a maximum of two electrons.

The order in which the orbitals are filled is given below

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p, 8s

Mkey [24]3 years ago

5 0

e) both s and p

hope this helps!

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laila [671]

Answer:

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3 years ago

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C12H26O + SO3+NaOH ----> C12H25NaSO4+ H2O

Vlad [161]

Answer:

We can solve this by the method of which i solved your one question earlier

so again here molar mass of C12H25NaSO4 is 288.372 and number of moles for 11900 gm of C12H25NaSO4 will be = 11900/288.372

which is almost = 41.26 moles

so to get one mole of C12H25NaSO4 we need one mole of C12H26O

so for 41.26 moles of C12H25NaSO4 it will require 41 26 moles of C12H26O

so the mass of C12H26O = 41.26× its molar mass

C12H26O = 41.26×186.34

= 7688.38 gm!!

so the conclusion is If you need 11900 g of C12H25NaSO4 (Sodium Lauryl Sulfate) you need C12H26O 7688.38 gm !!

Again i d k wether it's right or wrong but i tried my best hope it helped you!!

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3 years ago

What is the number of moles in 42 g of NaCl?

olganol [36]

B. 0.72 mol NaCl

http://www.convertunits.com/from/grams+NaCl/to/moles

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What is the conclusive evidence that mixing sugar in the water is a physical change

djyliett [7]

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3 years ago

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Answer:

298

hope this helps

have a good day :)

Explanation:

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