What organ is this is able to produce enzymes and capable of digesting all foodstuffs

What is the formula that this ionic compounds could form sr2+p3-o2-

One does not belong why? ice, gold ,wood ,diamond and table salt

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.