What is the molality of a solution containing 20.0 g of naphthalene (C 10 H 8 ) dissolved in 400.0 g of toluene? Unknown'

Calculate the change in entropy if br2(l) is converted to br2(g). s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)

An experimental procedure requires a 10 ml of acid to be dissolved

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?