Why are there 2 chloride ions for every 1 calcium in calcium chloride

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)

Water molecules have a strong attraction to each other because of hydrogen bonding, allowing water to move against gravity up a plant's stem through capillary action. true false

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false