How many grams of C3H20 are in 5.00 x 1022 molecules?
4.99g
50.0 g
29.9 g
.083 g​

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An electrons position cannot be known precisely only it's probability of being in a certain location can be known

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.