When ammonium chloride NH4Cl is added to water and stirred, it dissolves spontaneously (this is the basis for ΔG) for and the resulting solution feels cold (endothermic, the basis for ΔH). Without doing any calculations, we can easily deduce the signs of ΔG, ΔH, and ΔS for this process based on the observations.
ΔG < 0 (it is spontaneous)
ΔH < 0 (because the process is endothermic - it absorbs energy)
ΔS > 0 (entropy increases because of the dissolution of NH4Cl in water
A thing or substance used for a insulator, for example a substance that does not readily allow the passage of heat or sound
Empirical formula has a mass of 207g
3. A full octet (8 electrons) is needed to be stable. So if the atom gets 3 more atoms it will be stable.
