Rosio

describe the death of a massive star (10 solar masses)

what is a black hole and how does a black hole form?

A considerable amount of heat is required for the decomposition of aluminum oxide shown below. What is the heat change when 3.5 moles of aluminum oxide are decomposed? Is this endothermic or exothermic? 2Al2O3(s) → 4Al(s) + 3O2(g) ΔH = 3352kJ