Escriba las fórmulas de los siguientes compuestos iónicos:

A) óxido de sodio

B) sulfuro de hierro (que contenga el ion Fe 2+)

C) Sulfato de cobalto (que contenga los iones Co 3+ y SO 2- (arriba) y 4 (abajo)

D) Fluoruro de bario

Ayúdenme, por favor!!!

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

How does concentration affect reaction rate

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule