Concept explainers
Practice ProblemATTEMPT
Perform the following arithmetic operations, and report the result to the proper number of significant figures:
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Chemistry
- Practice Exercise 1Platinum, Pt, is one of the rarest of the metals. Worldwideannual production is only about 130 tons. Platinum has a densityof 21.4 g>cm3. If thieves were to steal platinum from a bank usinga small truck with a maximum payload capacity of 900 lb, howmany 1 L bars of the metal could they take?(a) 19 bars (b) 2 bars (c) 42 bars (d) 1 bar (e) 47 barsarrow_forwardPractice Exercise 1Which of the following weights would you expect to besuitable for weighing on an ordinary bathroom scale? 2.0 * 107 mgarrow_forwardPractice excercise 1arrow_forward
- ▶ Practice Exercise 1You are asked to determine the mass of a piece of copper using itsreported density, 8.96 g/mL, and a 150-mL graduated cylinder.First, you add 105 mL of water to the graduated cylinder; thenyou place the piece of copper in the cylinder and record a volumeof 137 mL. What is the mass of the copper reported with the correctnumber of significant figures? (a) 287 g (b) 3.5 * 10-3 g/mL(c) 286.72 g/mL (d) 3.48 * 10-3 g/mLarrow_forward. What is the mass of the ethyl alcohol that exactly fills a 200.0 mL container? The density of ethyl alcohol is 0.789 g/mL. (Show Work)arrow_forwardI need calculation part only please do calculations as soon as possible experiment I already done do calculationsarrow_forward
- Using the definitions 1 in. = 2.54 cm and 1 yd = 36 in. (both exact), obtain the conversion factor for yards to meters. How many meters are there in 3.54 yd?arrow_forwardPractice Problems What is the sum of 5.660 km and 0.03974 km? Calculate the difference between 42.8 mL and 4.535 mL. What is the area of a square crystal surface that measures 2.89 μm by 0.3460 μm? Polycarbonate plastic has a density of 1.2 g/cm3 . A tray is constructed from a sheet of polycarbonate with a thickness of 0.75 cm and that measures 36.0 cm by 26.0 cm. What is the mass of the tray?arrow_forward(6) A group of students collected 125 empty aluminum cans to take to therecycling center. If 21 cans make 1.0 lb aluminum, how many liters ofaluminum (D=2.70 g/cm3) are obtained from the cans? (Example worked inclass)arrow_forward
- The distance from Philadelphia to Atlanta, GA is 4.17 x 106 feet. How many minutes would it take to drive to Atlanta from Philadelphia if your average speed is 65.0 mi/hr? (1hr = 60 min; 5280 ft = 1 mile) Please type answer note write by hendarrow_forwardI think its either 1 or 2 but im not sure, its difientely not 4 though. I asked this question on bartleby multiple times and both times I got differnt answers please choose the correct answerarrow_forwardQuestion: A 795-centigram sample of borax was placed in a certain volume of water at 25 °C. After adding the sample, the graduated cylinder was read at 35 milliliters, where a rise of 2.7 milliliters was observed. 1. What is the weight of sample in grams? Your answer here will be used for the next item(s). 2. What was the initial volume of water in milliliters? 3. What will be the weight of displaced water in grams? Your answer here will be used for the next item(s). 4. What is the specific gravity of the solid? Your answer here will be used for the next item(s). 5. What will be its specific volume?arrow_forward
- General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning