When the CaCl2(s) is added to water, the following reaction occurs. CaCl2(s) → Ca2+(aq) + 2Cl–(aq) ΔH = – 81.5 kJ A 36.6 g sample of CaCl2 is dissolved in water, with both substances at 25.0 °C. Calculate the final temperature (in °C) of the solution assuming no heat is lost to the surroundings, the final solution, containing CaCl2 and water, has a mass of 100.0 g and the solution has a specific heat capacity of 4.18 J °C–1g –1. The molar mass of CaCl2 = 110.98 g/mol

Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radical–radical combination reaction is the formation of a new electron‑pair bond. consider the chemical equation. n(g)+no(g)⟶nno(g) n(g)+no(g)⟶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)