O atomo constituido de 17 protons, 18 neutrons e 17 eletrons, possui numero atomico e numero de massa igual a: a) 17 e 17 b) 17 e 18 c) 18 e 17 d) 17 e 35 e) 35 e 17

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

explanation:

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this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.