Chemistry, 20.11.2020 18:50 sl3olsonow8388
Deandra notices that most of the atomic masses on the periodic table are not whole numbers. She
wonders: "Why do many atomic masses have decimals?"
Which of the following would be the best answer to her question?
A the atomic mass includes the mass of the electrons
B. the atomic mass measures the relative abundance of the ions
C. the mass of neutrons can vary
D. the atomic mass is a weighted average of the isotopes
Answers: 3
Chemistry, 21.06.2019 21:00
Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?
Answers: 1
Chemistry, 22.06.2019 07:50
Which of the following electromagnetic waves can create ions?
Answers: 2
Chemistry, 22.06.2019 18:00
Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?
Answers: 2
Deandra notices that most of the atomic masses on the periodic table are not whole numbers. She
won...
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