Questions by John Barrat

Questions by John Barrat

Calculate the The wavelength of the first Balmer series of hydrogen is 6562 following: a) The ionization potential, and b) The first excitation potential of the hydrogen atom.

asked May 15, 2020

1 answer

5 votes

65.0k views

Gallium has two naturally occurring isotopes, 696a (isotopic mass 68.9256 amu, abundance 60.11%) and 716a (isotopic mass 70.9247 amu, abundance 39.89%). Calculate the atomic mass of gallium

asked May 13, 2020

1 answer

4 votes

89.6k views

In the story "Paul's Case," why is Paul irritated and wretched after the concert? A. He has spoken with the singer. End of exam B. His real life is so different from his dream. C. He has seen his English

asked Oct 3, 2019

1 answer

5 votes

70.8k views

What was one reason for the democratic defeat in the presidential election of 1952

asked Feb 23, 2019

2 answers

3 votes

52.3k views

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