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?

3.35 mole.

Explanation:

Using cross multiplication and from the stichiometry:

2.0 moles of NiO(OH) produce → 1.0 mole of Fe(OH)₂

6.70 mole of NiO(OH) produce → ??? mole of Fe(OH)₂

∴ The number of moles of Fe(OH)₂ produced = (1.0 mole) *6.70 mole) / (2.0 mole) = 3.35 mole.

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.