Chemistry, 29.07.2019 03:10 menendezliliana5
Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it?
Answers: 2
Another question on Chemistry
Chemistry, 22.06.2019 10:00
Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.
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
Chemistry, 22.06.2019 14:30
What state of matter is ice a. liquid b. element c. solid d. gas
Answers: 1
Chemistry, 22.06.2019 18:30
Which sample at stp has the same number of atoms as 18 liters of ne at stp
Answers: 1
You know the right answer?
Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it?...
Questions
Biology, 27.06.2019 15:00
Mathematics, 27.06.2019 15:00
Mathematics, 27.06.2019 15:00
History, 27.06.2019 15:00
Social Studies, 27.06.2019 15:00
Social Studies, 27.06.2019 15:00
World Languages, 27.06.2019 15:00
