Dadas las siguientes ecuaciones y valores de ∆H° determine el calor de reacción (kJ) a 298 K para la reacción: 3 Fe2O3 (s) → 2 Fe3O4 (s) + 1/2 O2 (g)
Si:
2 Fe (s) + 3/2 O2 (g) → Fe2O3 (s) ∆H°= -823,41 kJ
3 Fe (s) + 2 O2 (g) → Fe3O4 (s) ∆H°= -1120,48 kJ

Which of these best describes the scientific process

219 grams of iron (iii) oxide reacts with excess carbon according to the reaction equation shown below. fe2o3 + c → fe + co2 after a scientist performs the chemical reaction they find the actual yield of iron to be 57.4 grams. calculate the percent yield of this chemical reaction.

City a and city b had two different temperatures on a particular day. on that day, four times the temperature of city a was 8â° c more than 3 times the temperature of city b. the temperature of city a minus twice the temperature of city b was â’3â° c. what was the temperature of city a and city b on that day? city a was 5â° c, and city b was 4â° c. city a was 3â° c, and city b was â’1â° c. city a was 8â° c, and city b was â’3â° c. city a was 5â° c, and city b was â’5â° c.