1. Calcium nitrate and ammonium fluoride react to form calcium fluoride, dinitrogen monoxide, and water vapor. How many grams of dinitrogen monoxide are present after 21 g of calcium nitrate and 39.2 g of ammonium fluoride react completely? Hint: Write a balanced chemical reaction first, then find which one is the limiting reactant.
2. How many total moles of ions are released when 0.965 moles of ammonium acetate is dissolved in water?
3. What is the molarity of a solution that contains 309.5 g of calcium acetate dissolved in 1.99 l of solution?
4.
Circle A represents a unit volume of 100. ml of a solution. Which circle (B, C, or D) best represents the unit volume after 200. ml of solvent has been added to A?
