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(FATEC) Considere as afirmações a seguir, segundo a Lei de Hess.I - O calor de reação (ΔH) depende apenas dos estados inicial e final do processo.II - As equações termoquímicas podem ser somadas como se fossem equações matemáticas.III - Podemos inverter uma equação termoquímica desde que se inverta o sinal de ΔH.IV - Se o estado final do processo for alcançado por vários caminhos, o valor de ΔH dependerá dos estados intermediários através dos quais o sistema pode passar.Conclui-se que:a) as afirmações I e II são verdadeiras.b) as afirmações II e III são verdadeiras.c) as afirmações I, II e III são verdadeiras.d) todas são verdadeiras.e) todas são falsas.
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