Chemistry, 20.11.2020 09:00, kasonlowery

If yellow spheres represent 28/12Mg atoms and blue spheres represent 28/13Al atoms, how many half-lives have passed in the following sample?

Answers: 1

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 12:00, Alexislol7908

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor

Answers: 1

continue

Chemistry, 22.06.2019 14:00, jivsf

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

continue

Chemistry, 22.06.2019 18:00, meowmeowcow

Find the mass, in grams, of 5.00*10^23 molecules of f2

Answers: 3

continue

Chemistry, 22.06.2019 19:20, Lovelybunny321

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.

Answers: 1

continue

Do you know the correct answer?

If yellow spheres represent 28/12Mg atoms and blue spheres represent 28/13Al atoms, how many half-li...