1. A volume of saline solution has a mass of 25.6 g at 4 °C. An equal volume of water at the same temperature has a mass of 24.5 g.
2. What is the density of the saline solution? Children's Liquid Motrin contains 100. mg of the pain reliever ibuprofen per 5 mL. If the dose for a 45.0 lb child is 1.5 teaspoons, how many grams of ibuprofen would the child receive?