Question 1: What is the name of the compound CuCl2 · 4H2O?
Question 2: A hydrate of CuSO4 has a mass of 11.71 g before heating. After heating, the mass of the anhydrous compound is found to be 8.75 g. Explain how you would determine the formula of the hydrate and then write out the full name of the hydrate.
Question 3: A pure compound is found to be 40.0% carbon by mass, 6.73% hydrogen by mass, and 53.3% oxygen by mass. Determine the empirical formula of the compound. Be sure to show your work.
Question 4: How many milliliters of sodium metal, with a density of 0.97 g/mL, would be needed to produce 12.8 grams of hydrogen gas in the single replacement reaction below? Show all steps of your calculation as well as the final answer. Unbalanced equation: Na + H2O --> NaOH + H2
Question 5: If 75.5 g N2 react with 15.4 g H2 according to the reaction below, how many grams of ammonia (NH3) can be produced and how many grams of the excess reactant will be left over? Be sure to show all of your work. Unbalanced equation: N2 + H2 --> NH3