To find moles in this sample, you would divide grams by molar mass of ethyl alcohol
(18.0g)/(46.07g/mol) = 0.391mol C2H6O
Answer & Explanation:
Los electrones externos se encuentran más lejos del núcleo. El número de electrones en la capa más externa (electrones de valencia) de un átomo en particular determina su reactividad (tendencia) a formar enlaces químicos con otros átomos.
Los electrones internos son los más cercanos al núcleo. Protegen los electrones de valencia del núcleo, reduciendo la carga nuclear efectiva.
Answer: Please See answers below
Explanation:
A. Ions in mobile phase are attracted to counterions covalently attached to stationary phase -----Ion Exchange Chromatography
B. Solute in mobile phase is attracted to specific groups covalently attached to stationary phase -----Affinity Chromatography
C. Solute equilibrates between mobile phase and surface of stationary phase -----Adsorption Chromatography
D. Solute equilibrates between mobile phase and film of liquid attached to stationary phase --- Partition Chromatography
E. Different-sized solutes penetrate pores in stationary phase to different extents. Large solutes are eluted first.
---Molecular Exclusion Chromatography