.- Calcula el calor de reacción a presión constante de la reacción: CaC2(s) + 2 H2O(l)  Ca(OH)2(s) + C2H2(g) (Sol: -128 kJ) b) ¿Qué cantidad de energía se libera en la combustión de 100 dm3 de acetileno, C2H2, medidos a 25ºC y 1 atm? (Sol: - 5317 kJ)

Sorry my friend i don't know the answer. i am just in 6th

100 pounds is 100 pounds no matter the object or item being weighed

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction