Question 3(multiple choice worth 3 points) when a substance freezes, what happens to the mass? a-there is no mass once the substance becomes a solid. b-the mass stays constant as it changes from a liquid to a solid. c-the mass decreases as it changes from a liquid to a solid. d-the mass increases as it changes from a liquid to a solid.

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.

How do you convert 4 mmol of bromobenzene to ml?

The diagram below shows the movement of particles. what does this piece of evidence best support? the collision theory the maxwell-boltzmann distribution the effect of pressure on reaction rates the effect of temperature on reaction rates