Review exercise I.- Solve the following problems by writing down the complete procedure:

a.- How many liters of hydrogen are obtained when 95 L of Hydrobromic Acid react, the following reaction occurs:
2Fe + 6HBr 3 H 2 + 2Fe Br3

b.- Calculate the grams of sodium that are required to produce 120 g of sodium chloride when the following reaction is carried out:
2Na + Cl 2 2NaCl

c.- How many liters of water are needed to produce 75 L of hydrogen, the following reaction occurs:
2K + 2 H 2 O 2KOH + 2 H 2

d.- Determine the grams of Aluminum required to produce 196 grams of Aluminum Sulfide through the following reaction:

2Al + 3 S Al 2 S 3