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2 years ago

Calculate the frequency of the n = 3 line in the Lyman series of hydrogen.

1 answer:

4 0

Based on the calculation from Rydberg equation of Spectral Series emissions, The frequency of the n = 3 line in the Lyman series of Hydrogen will be :
103 nanometers

hope this helps

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Gina wants to use models to better understand how the types of bonds in a molecule relate to the presence of geometric isomers.

vazorg [7]

The answer to this question is D! The ball and stick model! Hope this helps :)

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2 years ago

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A water molecule is composed of a large oxygen atom bonded to two small hydrogen atoms. Which of the following would make the be

sleet_krkn [62]

The best and most correct answer among the choices provided by your question is the third choice or letter C.

The best model of a water molecule would be: Two small, plastic balls attached to a larger plastic ball by toothpicks

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

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2 years ago

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In the equilibrium system described by: PO43-(aq) + H2O(1) = HPO42-(aq) + OH-(aq) Brønsted-Lowry theory would designate: A) PO43

Kamila [148]

Answer:

The correct option is: B) H₂0 and OH⁻ as a conjugate pair

Explanation:

According to Brønsted-Lowry theory, the acids are the chemical substances that form a conjugate base by donating a proton and bases are the chemical substances that form conjugate acid by accepting a proton.

In the given chemical reaction: PO₄³⁻(aq) + H₂O(l) ⇄ HPO₄²⁻(aq) + OH⁻(aq)

According to Brønsted-Lowry theory, PO₄³⁻ and OH⁻ are bases. Whereas, H₂O and HPO₄²⁻ are acids.

Also, PO₄³⁻ and HPO₄²⁻ are the conjugate acid-base pair; and H₂O and OH⁻ are the conjugate acid-base pair.

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2 years ago

In which of the following aqueous solutions would you expect AgI to have the highest solubility? In which of the following aqueo

telo118 [61]

Answer:

Solubility indicates the maximum amount of a substance that can be dissolved in a solvent at a given temperature. Such a solution is called saturated,it is calculated by dividing the mass of the compound by mass of the solvent then multiply by the molar concentration.

molar mass of solvent (Agl)= 107.8682 + 126.90447 = 234.77267g/mol

For 0.038M of Nal

molar mass of Nal compound= 22.99 + 126.90447 = 149.89447g/mol

solubility = [ 149.89447 / 234.77267] * 0.038 = 0.024

For 0.05M of AgNO3

molar mass of AgNO3 compound = 107.8682 + 14.01 + 3(16) = 169.8782g/mol

solubility = [169.8782 / 234.77267] * 0.05 = 0.036

For 0.025M of KI

molar mass of KI compound = 39.0983 + 253.8089 = 292.9072g/mol

solublity = [292.9072 / 234.77267] * 0.025 = 0.031

For 0.0125M of Lil

molar mass of Lil compound = 6.941 + 253.8089 = 260.7499g/mol

solubility = [260.7499 / 234.77267] * 0.0125 = 0.014

Therefore the solution with the highest solubility is 0.05M of AgNO3

5 0

2 years ago

Ion arrangements of three general salts are represented below. h5sil917 h5sil917021 h5sil91703 which ion arrangement has the hig

vovangra [49]

This question is incomplete. Luckily, I found the same problem which is shown in the attached picture. To answer the question, we must know how the size and charge affect the lattice energy. The answer is: lattice energy increases with the increasing charge of the ions, and decreasing radius of the atoms. Therefore, the ranking would be: A .

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2 years ago