43 which temperature change indicates an increase in the average kinetic energy of the molecules in a sample? (1) 15°c to 298 k (3) 305 k to 0°c
(2) 37°c to 273 k (4) 355 k to 25°c

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

i think its 100

i hope this !