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Helen [10]
3 years ago
6

Which of the following was not a contribution by Niels Bohr?Electrons are in orbits. There is a relationship between the outer s

hell and chemical properties. The charge of an electron. Quantum energy emissions.
Chemistry
2 answers:
lara31 [8.8K]3 years ago
6 0
Neil Bohr contributed towards science in many ways, but his contributions did not include the charge of an electron. Neil Bohr recognized a relationship between the chemical properties of a substance and the number of valence shell electrons. Moreover, he introduced the atomic model in 1913 and provided the liquid-drop model to explain nuclear fusion.
elena55 [62]3 years ago
5 0

Answer: The charge of an electron

Explanation:

The charge on electrons was determined by the Robert Millikan and Harvy Fletcher from their experiment named Oil drop experiment.

The charge on the electrons is -1.602\times 10{-19} Coulombs

Whereas Neil Bohr in his structure of atom explained that:

  • Electrons are moving around the nucleus in a discrete circular paths known as orbits or shells.
  • These orbitals or shells have fixed value of energy.
  • Emission spectra of hydrogen.
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An inflatable toy starts with 1.05 moles of air and a volume of 5.17 liters. When fully inflated, the volume is 8.00 liters. If
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Answer:-  1.62 moles

Solution:- At constant temperature and pressure, volume is directly proportional to the moles of the gas.

\frac{V_1}{V_2}=\frac{n_1}{n_2}

from given data, V_1 = 5.17 L, n_1 = 1.05 moles

V_2 = 8.00 L, n_2 = ?

Let's plug in the values in the formula:

\frac{5.17L}{8.00L}=\frac{1.05moles}{n_2}

On cross multiply:

n_2=\frac{8.00L(1.05moles)}{5.17L}

n_2 = 1.62 moles

So, now the toy contains 1.62 moles of the air.


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