Which mixture can be separated through filtration because one the substances is insoluble in water?

answers:

* nacho and pb(clo)
* na so and srso
* nano and pb(no)
* nac h o and pb ( c h o )

Can someone me with 1 to 4 plz. fast

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.

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li