Can anybody help? This is a major quiz

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

How do you convert 4 mmol of bromobenzene to ml?

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.