4. La siguiente ecuación balanceada muestra la preparación de Al2O3 (óxido de aluminio) calentando 225 g de óxido de cromo (II) con 125 g de aluminio. a) ¿Cuántos gramos de óxido de aluminio se forman?

Why is an elements atomic mass not listed as a whole number on the periodic table

May someone me with these science questions

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.