15. A cylindrical chemical storage tank with a capacity of 950m³ is going to be constructed in awarehouse that is 11m by 14m with a height of 10m. The specifications call for the case to bemade of sheet metal that costs $90/m², the top to be made from sheet metal that costs $45/m² andthe wall to be made of sheet metal that costs $80/m². If you want to minimize the cost to makethe storage house, how much would you end up spending to build the tank?! 1. Considering the following graph of f(x).+-2-0-246i. Circle the interval(s) where f'(x) is positive.a) (-infinity, 0), (2, 4)c) (1, 3), (4, 4.5)b) (-infinity, 1), (3, 4.5)d) (3,2), (2,5)ii. Circle the interval(s) where f'(x) is negative.a) (0, 1), (4.5, 6)b) (0, 2), (4, 4.5), (4.5, 6)c) (-infinity, 1), (3, 4.5), (5, 6)d) (-infinity, -3), (4.5, 6)

Answered: 15. A cylindrical chemical storage tank…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section: Chapter Questions

Problem 123QRT

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Follow the instructions of Problem 47 for the following set of bulbs.
A student is given a sample of a pink manganese (II) chloride hydrate. She weighs the sample in a dry, covered crucible and obtains a mass of 26.742g for the crucible, cover, and sample. Earlier she had found that the crucible and cover weighed 23.599g. She then heats the crucible to drive off the water of hydration, keeping the crucible at red heat for about 10 minutes with the cover slightly ajar. She then lets the crucible cool and finds it has a lower mass; the crucible, cover and contents then weigh 25.598g. In the process the sample was converted to off-white anhydrous MnCl2. a. What was the mass of the hydrate sample? _ghydrate b. What is the mass of the anhydrous MnCl2? _gMnCl2 c. How much water was driven off? _gH2O d. What is the percent by mass of water in the hydrate? water=massofwaterinsamplemassofhydrateinsample100 _massH2O e. How many grams of water would there be in 100.0g hydrate? How many moles? _gH2O; _molesH2O f. How many grams of MnCl2 are there in 100.0g hydrate? How many moles? What percentage of the hydrate is MnCl2? Convert the mass of MnCl2 to moles. The molar mass of MnCl2 is 125.85g/mol. _gMnCl2; _molesMnCl2 g. How many moles of water are present per mole MnCl2? _ h. What is the formula of the hydrate? _
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2. SAMPLE # 2 crucible, cover, unknown hydrate 18.1352g crucible and cover |5. \4० ४ sample 2.9944 first second third weighing weighing weighing crucible, cover, anhydrous salt 17.5246 7,5249 g H2O lost (use your last weighing) 17.5249g % water, experimental SHOW CALCULATION 93
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