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Luda [366]
3 years ago
14

In an atom, the first energy level can hold

Chemistry
1 answer:
Pepsi [2]3 years ago
3 0

Answer:

2, 8, 18

Explanation:

The number of orbitals for any level of interest n is calculated by a formula o = n^2. Since each orbital contains a maximum of 2 electrons, we can calculate the total number of electrons in an nth orbital by e = 2n^2.

  • As a result, the first energy level for n = 1 can hold a maximum of 2n_1^2 = 2\cdot 1^2 = 2 electrons,
  • The second energy level can hold a maximum of 2n_2^2 = 2\cdot 2^2 = 8 electrons,
  • The third energy level can hold a maximum of 2n_3^2 = 2\cdot 3^2 = 18 electrons.
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I am guessing that your solutions of HCl and of NaOH have approximately the same concentrations. Then the equivalence point will occur at pH 7 near 25 mL NaOH.

The steps are already in the correct order.

1. Record the pH when you have added 0 mL of NaOH to your beaker containing 25 mL of HCl and 25 mL of deionized water.

2. Record the pH of your partially neutralized HCl solution when you have added 5.00 mL of NaOH from the buret.

3. Record the pH of your partially neutralized HCl solution when you have added 10.00 mL, 15.00 mL and 20.00 mL of NaOH.

4. Record the NaOH of your partially neutralized HCl solution when you have added 21.00 mL, 22.00 mL, 23.00 mL and 24.00 mL of NaOH.

5. Add NaOH one drop at a time until you reach a pH of 7.00, then record the volume of NaOH added from the buret ( at about 25 mL).

6. Record the pH of your basic HCl-NaOH solution when you have added 26.00 mL, 27.00 mL, 28.00 mL, 29.00 mL and 30.00 mL of NaOH.

7. Record the pH of your basic HCl-NaOH solution when you have added 35.00 mL, 40.00 mL, 45.00 mL and 50.00 mL of NaOH from your 50mL buret.

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What is the correct prefix for 3 <br> tri-<br> di-<br> mono-<br> tetra-
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Kisachek [45]

Answer:

<u>2-chlorohexane</u>

Explanation:

<u>In this figure</u> :

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Given the following data in the Determination of Molar Mass of CO2 lab : Mass (before rxn): test tube HCl(aq) stir bar capsule 2
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Answer:

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