Calculate the number of moles of HBr produced from 20 moles of H 2 and an excess of Br 2 H2 + Br2 —> 2HBr

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.

if you're asking what comes out, it's steam.