Calculate the energy required to vaporize a chunk of ice at -25°C with the mass of 12.5kg

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

Explain what happens at the saturation point when adding salt to water at room temperature.

What causes most sediment to wash or fall into a river