El mol es definido como la cantidad de materia que contiene determinado número de entidades elementales (átomos, moléculas, etc.) equivalente a la cantidad de átomos que hay PASAR DE GRAMOS A MOLES

A. tenemos 250 g de hierro, ¿Cuántas moles de hierro están contenidos en dicha masa?

a.
4,46 Moles

b.
4,87 Moles

c.
3,76 Moles

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?

How many moles of bromine are needed to produce 3.23 moles of potassium bromide