For which of the following reactions is ΔH∘rxn equal to ΔH∘f of the product(s)?You do not need to look up any values to answer this question 1. C(s, graphite)+O2(g)→CO2(g) 2. CaCO3(g)→CaO+CO2(g) 3. Li(s)+12Cl2(l)→LiCl(s) 4. Li(s)+12Cl2(g)→LiCl(s) 5. 2Li(s)+Cl2(g)→2LiCl(s) 6. CO(g)+12O2(g)→CO2(g)

i can ! i just need to know what the paragraph is! : p

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.