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- How many moles of NaHCO3 can be produced from 125 mol of NaCl
- How many moles Of H2O are produced when 6 mol of O2 is consumed in burning methyl alcohol, CH3OH, according to the following equation?
- Solutions of iron(III) chloride, FeCl3, are used in photoengraving and to make ink. This compound can be made by the following reaction.

a. How many moles of FeCl3 form from 31 mol of Cl2?
b. How many moles of Fe are needed to combine with 5 mol of Cl2 by this reaction?
c. If 0.62 mol of Fe is to be used by this reaction, how many moles of FeCl3 form?
- Ammonia is produced synthetically by the reaction:

a. Is this an exothermic or endothermic process?
b. How many moles of NH3 are formed when 1 mol of N2 reacts with hydrogen?
c. If 18 x 1023 molecules of H2 react with nitrogen, how many moles of NH3 are produced?

Answer :

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You are given 6 moles of oxygen and methanol. You are asked to find how many moles Of H2O. To solve this, use a combustion reaction where you react oxygen to methanol to form water and carbon dioxide.
CH₃OH + 2O₂ = CO₂ + 2H₂O
6 moles of O₂(2 moles H₂O/2 moles of O₂) = 6 moles of H₂O

Ammonia is produced synthetically by the reaction N₂ + 3H₂ = 2NH₃. The production of ammonia is an exothermic process because it produces heat after its formation.
1 mole N₂ (2 moles NH₃/ 1 mole N₂) = 2 moles NH₃
18x10²³  molecules H₂ (1 mole H₂/ 6.023x10²³ molecules H₂)(2 moles NH₃/ 3 moles H₂) = 2 moles NH₃

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