Which of the following represents the chemical of aluminum and ferric oxide to produce iron and aluminum oxide? a iron +ferric oxide —-> aluminum + aluminum oxide b aluminum oxide + ferric oxide —-> iron + aluminum c iron + aluminum oxide —> aluminum + ferric oxide d aluminum + ferric oxide ——> iron + aluminum oxide

Which statement justifies that phosphine (ph3) is a polar molecule?

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.

2ki + pb(no3)2 → 2kno3 + pbi2 determine how many moles of kno3 are created if 0.03 moles of ki are completely consumed.