Classify each statement as a cradle-to-cradle process, a cradle-to-grave process, or both cradle-to-cradle and cradle-to-grave. Cradle-to-cradle All polyethylene terephthalate water bottles are recycled to produce fleece garments. 100% of polypropylene bottle caps are recycled into plastic furniture. Designers include 1950s Bakelite buttons in their vintage-inspired clothing. Cradle-to-grave Half of used milk jugs are reused to make plastic lumber, but the other half are disposed in landfills. A small percentage of low-density polyethylene bags are reused to make new products. A greater percentage end up in landfills, Nylon jackets are either donated to charities or disposed in landfills Both

Classify each statement as a cradle-to-cradle process, a cradle-to-grave process, or both cradle-to-cradle and cradle-to-grave. Cradle-to-cradle All polyethylene terephthalate water bottles are recycled to produce fleece garments. 100% of polypropylene bottle caps are recycled into plastic furniture. Designers include 1950s Bakelite buttons in their vintage-inspired clothing. Cradle-to-grave Half of used milk jugs are reused to make plastic lumber, but the other half are disposed in landfills. A small percentage of low-density polyethylene bags are reused to make new products. A greater percentage end up in landfills, Nylon jackets are either donated to charities or disposed in landfills Both

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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A student experimentally determines the gas law constant, R, by reacting a small piece of magnesium with excess hydrochloric acid and then collecting the hydrogen gas over water in a eudiometer. Based L-atm on experimentally collected data, the student calculates R to equal 0.0832 mol·K L-atm Ideal gas law constant from literature: 0.08206 mol·K (a) Determine the percent error for the student's R-value. Percent error = % (b) For the statements below, identify the possible source(s) of error for this student's trial. The student notices a large air bubble in the eudiometer after collecting the hydrogen gas, but does not dislodge it. The student does not clean the zinc metal with sand paper. The student does not equilibrate the water levels within the eudiometer and the beaker at the end of the reaction. The water level in the eudiometer is 1-inch above the water level in the beaker. The student uses the barometric pressure for the lab to calculate R.
Calculate the number of kilojoules of energy required to convert 75.0 grams of solid t-butanol initially at a temperature of -25.0°C to gas at 82.4°C. kJ substance Ethanol Water DMSO t-Butanol formula C₂H5OH H₂O C₂HGSO C4H10O m.w. g/mol m.p. °C 46.069 -114.0 18.015 0.0 78.129 19.0 74.123 25.2 b.p °C 78.0 100.0 189.0 82.4 AH fus AHvap kJ/mol kJ/mol 5.02 38.6 6.01 40.67 14.4 48.6 6.78 39.1 Specific Heat Capacity Liquid J/g.°C 2.30 Solid J/g.°C 0.970 2.09 1.80 1.97 4.184 1.96 2.9 Gas J/g °C 1.94 1.84 1.20 1.73
9:08 PM ☹ & = ikf MB² = 5.12 °C/m 19²2- (-130%) = AT £ 1Jf=18492 ug°c = (5.12 L/m) n = 3.611 ●●● 25 Question 9 of 14 | g 1 3 4 6 7 9 +/- 0 Tap here or pull up for additional resources 8 What mass in grams of NaCl would need to be added to 2051 g of water to increase the boiling temperature of the solution by 1.500 °C? (Kb for water is 0.5100 °C/m) X C 20% 0 Submit x 100