Which reaction occurs spontaneously?
(1) cl2(g) + 2nabr(> br2(l) + 2nacl(aq)
(2) cl2(g) + 2naf(> f2(g) + 2nacl(aq)
(3) i2(s) + 2nabr(> br2(l) + 2nai(aq)
(4) i2(s) + 2naf(> f2(g) + 2nai(aq)

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.

Why would a doctor most likely restrict a patient's contact with other people while the patient receives internal radiation

Explaining why atoms bondcomplete the sentence.atoms form chemical bonds to satisfy the    rule and to become  .