Calculate the work, w, gained or lost by the system (in kJ) when a gas expands from 15 L to 35 L against a constant external pressure of 1.5 atm. **101.3 J = 1 L × atm

How many atoms are there in 5.70 mol of mg

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.

•hydration •dissociation •dissolving which one goes to which