Justine placed small pieces of different types of metals near the south end of a magnet. She observed what happened next. Which question was Justine most likely trying to answer by doing this experiment?
O A. Are metals attracted to both ends of a magnet?
B. Which metals are attracted to a magnet?
C. Why are metals attracted to magnets?
D. How strong is the force of a magnet?
BE
LAIDUAL
ID
kon
Creath.
CONIV 2016
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219 grams of iron (iii) oxide reacts with excess carbon according to the reaction equation shown below. fe2o3 + c → fe + co2 after a scientist performs the chemical reaction they find the actual yield of iron to be 57.4 grams. calculate the percent yield of this chemical reaction.

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.

What was bohr’s contribution to the planetary model