In the following reaction, 2A1 + 6HCl → 2AlCl3 + 3H2 , the oxidation state for aluminum goes from...
A) 0 → +1
B) 0 → +3
C) +3 → +3
D) +3 → -3
E) 0 → -3

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 4.20 mol fe and 6.70 mol nio(oh) react?