Determina la cantidad, en masa, de Cu(NO3)2 que podemos obtener, al tratar 25 g de Cu con un exceso de HNO3, si en la reacción obtenemos también NO2 más agua. ( masa atómicas: Cu:63,5 g/mol; N:14 g/mol; O:16 g/mol) Cu + 4 HNO3 ↔ Cu(NO3)2 + 2 NO2 + H2O

If 22.5 of nitrogen at 748 mm hg are compressed to 725 mm hg at constant temperature. what is the new volume?

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state. a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?