For each of the following pairs of materials, decide which has the larger thermal conductivity. Justify your

Question:

For each of the following pairs of materials, decide which has the larger thermal conductivity. Justify your choices.
(a) Pure copper; aluminum bronze (95 wt% Cu-5 wt% Al).
(b) Fused silica; quartz.
(c) Linear polyethylene; branched polyethylene.
(d) Random poly(styrene-butadiene) copolymer; alternating poly(styrene-butadiene) copolymer.