A sample of carbon dioxide gas (CO2) at 3.0 atm is at 0 °C. This gas is compressed to 30 L, and pressure at this volume is measured as 4.0 atm. Assuming temperature remains constant, what was the initial volume of gas?

Supongamos que estás estudiando dos estrellas. ambas estrellas tienen la misma magnitud aparente, pero la estrella a tiene una magnitud absoluta mayor que la estrella b. ¿que puedes decir acerca de la distancia a la tierra de estas dos estrellas?

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?