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Vitek1552 [10]
3 years ago
12

Niels Bohr's model of the hydrogen atom was controversial because _________.a. it contradicted accepted principles of physics. b

. held that electrons existed in allowed orbits and nowhere else. c. accounted for the observed spectrum in hydrogen. d. All of the above.
Chemistry
2 answers:
Tju [1.3M]3 years ago
5 0

Answer:

The correct answer to the question is

a. it contradicted accepted principles of physics

Explanation:

The idea of electrons moving in orbits contradict classical electromagnetism idea whereby electrons are expected spiral to the nucleus instantaneously. Meaning all atoms are supposed to be unstable a postulation that contradicts observable evidence.

Bohr's model of the atom consists of atoms, having electrons in specific orbits. The theory explains spectroscopy and enabled the determination of the constituent atoms present in distant stars.

True [87]3 years ago
5 0

Answer:

b. held that electrons existed in allowed orbits and nowhere else.

Explanation:

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Molar mass :

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1 mole <span>HC₂H₃O₂ -------------- 60 g
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mass =  1.26x10-⁴ * 60

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hope this helps!


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Answer:

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The absolute temperature of a gas is increased four times while maintaining a constant volume. What happens
poizon [28]

Answer:

<u>It increases by a factor of four</u>

Explanation:

Boyle's Law : At constant temperature , the volume of fixed mass of a gas is inversely proportional to its pressure.

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Charles law : The volume of the gas is directly proportional to temperature at constant pressure.

V = KT

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Applying equation (1) and (2)

\frac{PV}{T}=K

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According to question ,

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Put the value of T2 and V2 , The P2 can be calculated,

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We get,

P1=\frac{P2}{4}

or

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