Hydrogen bromide breaks down into diatomic hydrogen and bromine in the reaction shown. 2HBr - H2 + Br2 The energy of the reactant is 732 kJ/mol and the energy of the products is 630 kJ/mol. What is the total energy of the reaction? Is this reaction endothermic or exothermic?
(1 point)
A. -102 kJ/mol, endothermic
B. 102 kJ/mol, exothermic
C. 102 kJ/mol, endothermic
D. -102 kJ/mol, exothermic​

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.