2) Qual o ∆H da reação A → E sabendo os valores do ∆H das reações a baixo (0,5 pontos) A → B ∆H1 = - 743
B → 2C ∆H2 = + n° + 100
C → D ∆H3 = - 145
E → 2D ∆H4 = - 851
3) Qual é o valor do ∆H3 ? (0,5 pontos)

Asample of freon gas has a volume of 2.23 liters, a pressure of 4.85 kpa, and a temperature of -1.36°c. calculate the volume at a pressure of 1.38 kpa and a temperature of 5.5°c. (show work)

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume