Be sure to answer all parts. A pool is 51.6 m long and 48.0 m wide. If the average depth of water is 5.00 ft, what is the mass (in kg) of water in the pool? Enter your answer in scientific notation. The density of water is 1.0 g/mL. x 10 |kg
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- 1. Calculate the density of lead (in g/cm3) if a rectangular bar measuring 0.500 cm in height, 1.55 cm in width, and 25.00 cm in length has a mass of 219 g. 2. Approximately 75 mL of blood is pumped by a normal human heart at each beat. Assuming an average pulse of 72 beats per minute, calculate how many milliliters of blood are pumped in one day. Use the following conversions 1 day = 24 hours, 1 hour = 60 min. Report your answer using scientific notationIf Student A measures the volume of a liquid and reports its volume as 23.50 mLand Student B measures a different amount of the same liquid and reports itsvolume as 15.0 mL, is it likely that the students used the same measuring device?Yes or no? Explain your answerWhen you see this number: 0.00000123, how do we mathematically and scientifically see this: a. it is a must to convert this to scientific notation b. it has 3 significant figures c. it has 7 significant figures d. it has 8 significant figures I need explanation in a research way. Please don't base the answer to any articles that can be seen in google instead base it with a research paper or any studies with authors. Book-supported is also okay.
- 1.) Levoxyl is a drug used to treat Hypothyroidism, if a patient takes one 75.0 ng tablet per day, how many milligrams of levoxyl are in their 1 month (30 day) supply? 2.) The density of silver is 10.50 g/cm³ if 5.50 ng of pure silver pellets are added to a graduated cylinder containing 11.0 mL of water, to what volume will the water in the cylinder rise? 3.) Convert 10.0 g cm³/s² to kg m³/hr²A rubber stopper had a mass of 5.62g. When the rubber stopper is carefully added to 12.5 mL of water in a graduated cylinder, it sinks. The surface of the water rises to 19.2 mL. What is the density of the rubber stopper in g/cm^3?After a 5.87g sample of white metal has been added to the water in a 10mL graduated cylinder, the density of the white metal is 9.5g/mL and the new water level is 7.3mL. What was the water level in the cylinder before the sample was added?
- Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm chlorine or 1 g of chlorine per million g of water. By making use of DIMENSIONAL ANALYSIS ONLY, calculate the volume of a chlorine solution (in milliliters) a homeowner should add to her swimming pool ifthe solution contains 6.0 percent chlorine by mass and there are 2 x 104 gallons of water in the pool. The density of the chlorine solution is 1.087 g/mL, (assume that the density of water = 1.0 g/mL).Pheromones are compounds secreted by females of many insect species to attract mates. Typically, 1.00 × 10−8 g of a pheromone is sufficient to reach all targeted males within a radius of 0.500 mi. Calculate the density of the pheromone (in grams per liter) in a cylindrical air space having a radius of 0.500 mi and a height of 32.0 ft (volume of a cylinder of radius r and height h is π r2h). Enter your answer in scientific notation.Pheromones are compounds secreted by females of many insect species to attract mates. Typically, 1.00 × 10−8 g of a pheromone is sufficient to reach all targeted males within a radius of 0.500 mi. Calculate the density of the pheromone (in grams per liter) in a cylindrical air space having a radius of 0.500 mi and a height of 46.0 ft (volume of a cylinder of radius r and height h is πr2h). Enter your answer in scientific notation.
- Suppose you have two 100-mLmL graduated cylinders. In each cylinder, there is 44.0 mLmL of water. You also have two cubes: one is lead, and the other is aluminum. The density of lead and aluminum are 11.3 g/mLg/mL and 2.70 g/mLg/mL respectively. Each cube measures 3.0 cmcm on each side. After you carefully lower each cube into the water of its own cylinder, what will the new water level be in each of the cylinders? Express your answer to three significant figures and include the appropriate units.The legal limit for chromium in drinking water is 0.10 ppm. What is the maximum permissible mass of chromium (in \mu gμg) in exactly 1.0 cup (8.0 fl. oz.) of drinking water? Assume the density of drinking water is 1.00 g/mL. (1 fl. oz. = 29.57 mL)(Express your answer with two significant digits.)You are assigned the task of separating a desired granular materialwith a density of 3.62 g/cm3 from an undesired granularmaterial that has a density of 2.04 g/cm3. You want to dothis by shaking the mixture in a liquid in which the heaviermaterial will fall to the bottom and the lighter material willfloat. A solid will float on any liquid that is more dense. Usingan Internet-based source or a handbook of chemistry, findthe densities of the following substances: carbon tetrachloride,hexane, benzene, and diiodomethane. Which of theseliquids will serve your purpose, assuming no chemical interactiontakes place between the liquid and the solids?