You might have meant hemiacetal, not hemicetal.
Acetals contain two –OR groups, one –R group and a –H atom. In hemiacetals, one of the –OR groups in acetals is replaced by a –OH group<span>.
</span>
The answer is zero!
let me know if you need help with anything else! :)
A physical change is when something don't permanently change
The particles of the solute leave each other and become surrounded by particles of the solvent.