Durante la fabricación del ácido sulfúrico, el dióxido de azufre (SO2) se hace reaccionar con oxígeno (O2) para obtener trióxido de azufre (SO3), también gas.
a) Escribe y ajusta la reacción que tiene lugar.
b) ¿Cuántos gramos de oxígeno hacen falta para reaccionar con 16 g de SO2?
c) ¿Cuántos gramos de SO3 se obtendrán en ese caso?

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2

Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe