Chemistry, 28.06.2019 09:00 IsabelAyshi
Which of the following best describes how further studies supported joseph proust's discovery about proportion of elements in water? max planck discovered the planck's constant. john dalton proposed that matter is made of tiny particles. james chadwick discovered neutral particles in the nucleus of the atom. niels bohr determined that electrons inhabit distinct energy levels.
Answers: 1
Chemistry, 22.06.2019 04:00
How do scientists think that gravity affected the formation of our solar system?
Answers: 1
Chemistry, 22.06.2019 08:30
Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?
Answers: 1
Chemistry, 22.06.2019 14:00
The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.
Answers: 3
Which of the following best describes how further studies supported joseph proust's discovery about...
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