5. If magnesium hydroxide were used instead of NaOH, how many moles would it take to combine with three moles of KHP? Explain.

Consider the two-step process for the formation of tellurous acid described by the following equations:  ???2+ 2??−⟶ ???3 2− + ?2? ???3 2− + 2?+⟶ ?2???3 What mass of H2TeO3 is formed from 74.2 g of TeO2, assuming 100% yield?

A student weighs out 4.16 g of magnesium chloride and adds enough water to make 125.0 mL of solution.  The student then weighs out 8.82 g of sodium phosphate and adds enough water to make 250.0 mL of solution. 25.0 mL of the magnesium chloride solution is combined with 25.0 mL of the sodium phosphate solution. a.      Write a balanced equation for the reaction that occurs (remember to include phases). b.      If a precipitate forms, write the name of the precipitate and calculate the theoretical yield for the precipitate.  If no precipitate forms, calculate the limiting reactant. c.       If the temperature of the solution decreases, is this reaction exothermic or endothermic?

1. If 30.4 g of Nal (MM=149.89g/mol) are added to a 500.0 mL volumetric flask, and water is added to fill the flask, what is the concentration of Nal in the resulting solution? 2. What volume (in L) of 1.1 M FeCl3 would be required to obtain 0.59 moles of Cl- ions?