Answer:
A. The balanced equation for the reaction of hydrogen gas and nitrogen gas to form ammonia gas is: 2H₂(g) + N₂(g) → 2NH₃(g)
B. Since 3.00 moles of hydrogen gas are reacted, this means that 1.5 moles of nitrogen gas are also present. This yields a total of 3.00 moles of reactants. Since 2NH₃(g) are produced from this reaction, then 3.00 moles of hydrogen gas will produce 1.50 moles of ammonia gas.
C. To answer this question, first write and balance the equation for the reaction of chlorine gas and iron to form iron (III) chloride: 3Cl₂(g) + 2Fe(s) → 2FeCl₃(s)
Since 14.0 moles of iron (III) chloride are produced, then this means that 42.0 moles of chlorine gas must be reacted since each mole of chlorine gas produces 3 moles of iron (III) chloride. Therefore, 42.0 moles of chlorine gas is required to react with iron to produce 14.0 moles of iron (III) chloride.