En el laboratorio se tirne una botella de hcl de concentracion 32%m/v solycion madre y se desean preparar 150 ml de solución al 20 %m/v que volumen de la solycion originalse debe medir

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

Me i dont know what to do! 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.

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !