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- 1-98 The antifreeze-coolant compound used in cars does not have the same density as water. Would a hydrometer be useful for measuring the amount of antifreeze in the cooling system?1-76 If the density of air is 1.25 10-3 g/cc, what is the mass in kilograms of the air in a room that is 5.3 m long, 4.2 m wide, and 2.0 m high?1-89 Consider butter, density 0.860 g/mL, and sand, density 2.28 g/mL. (a) If 1.00 mL of butter is thoroughly mixed with 1.00 mL of sand, what is the density of the mixture? (b) What would be the density of the mixture if 1.00 g of the same butter were mixed with 1.00 g of the same sand?
- 1-56 The volume of a rock weighing 1.075 kg is 334.5 mL. What is the density of the rock in g/mL? Express it to three significant figures.1-60 The density of methanol at 20oC is 0.791 g/mL. What is the mass, in grams, of a 280 mL sample?1-31 In the SI system, the second is the base unit of time. We talk about atomic events that occur in picoseconds (10-12 s) or even in femtoseconds (10-15 s). But we don’t talk about megaseconds or kiloseconds; the old standards of minutes, hours, and days prevail. How many minutes and hours are 20. kiloseconds?
- 1-30 Add these groups of measured numbers using the correct number of significant figures in your answer: (a) 37.4083 + 5.404 + 10916.3 + 3.94 + 0.0006 (b) 84 + 8.215 + 0.01 + 151.7 (c) 51.51 + 100.27 + 16.878 + 3.68171-47 The doctor orders administration of a drug at 120. mg per 1000. mL at 400. mL/24 h. How many mg of drug will the patient receive every 8.0 hours?1-111 In the hospital, your doctor orders 100. mg of medication per hour. The label on the IV bag reads 5.0 g/1000. mL. (a) How many mL should infuse each hour? (b) The IV administration set delivers 15 gtts/mL, where the unit gtts denotes drops of liquid as explained in Problem 1-5 1. The current drip rate is set to 10. gtts/min. Is this correct? If not, what is the correct drip rate?
- 1-70 (Chemical Connections IA) The average lethal dose of heroin is 1.52 mg/kg of body weight. Estimate how many grams of heroin would be lethal for a 200-lb man.1-61 The density of dichloromethane, a liquid insoluble in water, is 1.33 g/cc. If dichioromethane and water are placed in a separatory funnel, which will be the upper layer?1-52 An order for a patient reads Give 40. mg of pantoprazole IV and 5 g of MgSO4 IV. The pantoprazole should be administered at a concentration of 0.4 mg/mL and the MgSO4 should be administered at a concentration of 0.02 g/mL in separate IV infusion bags. What is the total fluid volume the patient has received from both IV infusions?
