1. A low-strength aspirin tablet contains 81 mg of aspirin per tablet. How many tablets may a manufacturer prepare from 0.68 kg of aspirin? Round answer to the nearest whole number. Do not include units. 2. One-half liter of solution for intravenous infusion contains 9 g of drug. How many milliliters of the solution would contain 6.1 mg of drug? Round answer to the nearest thousandth. Do not include units.

3. An injection contains 50 mcg/0.5 mL of drug. How many μL of the injection should be administered to deliver 0.05 mg of drug? Round to the nearest whole number. Do not include units.

4. An inhalation aerosol contains 225 mg of metaproterenol sulfate, which is sufficient for 300 inhalations. How many micrograms of metaproterenol sulfate would be contained in 4 inhalation? Round to the nearest whole number. Do not include units.

5. What is the weight of drug, in grams, of 210000 tablets, each containing 20 mcg of the drug? Round answer to the nearest tenth. Do not include units.