The freezing point of an aqueous solution containing 15 g of a nonelectrolyte in 150 mL water is −5.4 °C. What is the molecular weight of the compound? K f = 1.86 °C/ m for water.

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.

the correct answer would be d. hope this !