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3 years ago

What are two important quantum-mechanical concepts associated with the Bohr model of the atom?

Chemistry

1 answer:

malfutka [58]3 years ago

4 0

Explanation:

The important quantum-mechanical concepts associated with the Bohr model of atom are :

1. Electrons are nothing but particles that revolve around the nucleus in discrete orbitals.

2. Energy is associated with each orbital is quantised. Meaning electron in each shell will have energy in multiple of a fixed quanta.

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Is the sun 240,000 miles from earth?

Andru [333]

92.96 million mi away

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3 years ago

The mineral stibnite, antimony(III) sulfide, is treated with hydrochloric acid to give antimony(III) chloride and hydrogen sulfi

jeka94

The balanced chemical reaction is written as:

Sb2S3 + 6HCl = 6SbCl3 + 3H2S

We are given the amount of antimony(III) sulfide to be used in the reaction. This is amount will be used for the calculations. We do as follows:

2.85 g Sb2S3 ( 1 mol / 339.715 g ) ( 6 mol SbCl3 / 1 mol Sb2S3 ) ( 228.13 g / mol ) = 11.48 g SbCl3

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3 years ago

Review energy changes by identifying the correct statements about each reaction.

Grace [21]

Answer: The reaction is exothermic

The $\Delta H$ value is negative.

Heat is a product.

Explanation:

$2H_2(g)+O_2(g)\rightarrow 2H_2O(l)+136.6kcal$

Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and $\Delta H$ for the reaction comes out to be positive.

Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and $\Delta H$ for the reaction comes out to be negative.

The substances which are written on the left side of the arrow are reactants and the substances which are written on the right side of the arrow are products. Thus heat is a product.

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3 years ago

Which kingdom does a multicellular living organism most likely belong to?

kotykmax [81]

Answer:

the answer is Fungi

Explanation:

it makes its own food and doesn't move from place to place that why this is the answer

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3 years ago

Calculate the percent dissociation of trimethylacetic acid in a aqueous solution of the stuff. You may find some useful data in

LuckyWell [14K]

Answer:

percentage dissociation of trimethylacetic acid in a 0.57M aqueous solution = 0.40%

Explanation:

check attachment below for more information o the answer.

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3 years ago