Arturo says that some plastics are made by chemically joining the same molecule to itself. Ida says that some plastics are made by chemically joining different molecules in an alternating pattern. Who is correct?

Supongamos que estás estudiando dos estrellas. ambas estrellas tienen la misma magnitud aparente, pero la estrella a tiene una magnitud absoluta mayor que la estrella b. ¿que puedes decir acerca de la distancia a la tierra de estas dos estrellas?

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

What are the first three quantum numbers for the electrons located in subshell 2s?