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Answer the following problems showing all appropriate work and Using Mole Wheel in your folder.
1) How many liters (2021-2022 use grams) of NH3 are needed to react completely with 30.0L of NO in the following chemical reaction. Assume all gases @STP.
4 NH3 (g) + 6 NO(g) --> 5 N2 (g) + 6 H2O(g)
2) How many grams of Fe2O3 are formed when 16.7g of Fe reacts completely with oxygen?
4 Fe(s) + 3 O2 (g) --> 2 Fe2O3 (s)
3) How many grams of calcium oxide do I need to react to obtain 0.905g of Hg as described by following reaction.
4 HgS(s) + 4 CaO(s) --> 4 Hg(l) + 3 CaS(s) + 1 CaSO4 (s)
Answer: 1) 20.0L NH3 @ STP (for 2022 students 11.4 grams) 2) 23.9g Fe2O3 3) 0.252g CaO