Please help this is important.

Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.

What is the compound name for the formula [ru(en)2cl2]2+ and [co(en)cl2br]-

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these