Calcula la entalpía para la reacción siguiente: Sn (S) + Cl2 (g) > SnCl2 (S) A partir de la información que se proporciona a continuación: Sn (S) + 2Cl2 (g) > SnCl4 (S) ∆H°reacción =-545,2 Kj SnCl2 (S) + Cl2 (g) > SnCl4 (l) ∆H°reacción =-195,4 K

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Which metal exist in liquid state and can be cut with knife ?