Chemistry, 02.10.2021 06:50 brapmaster764
In a sample of elemental bromine, 55% of the atoms are Br-79, and the remainder are Br-81. If this sample is typical of naturally occurring bromine, what is the average atomic mass of bromine?
Answers: 2
Chemistry, 21.06.2019 22:00
Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.
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Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .
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Chemistry, 22.06.2019 22:00
Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.
Answers: 1
In a sample of elemental bromine, 55% of the atoms are Br-79, and the remainder are Br-81. If this s...
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