Draft responses to the review questions from Chapter 12 in the text, and then write a two to three paragraph reflection on one of the case studies presented in Chapter 13 of the text. Submit this assignment as a single document with the following brief headings: “Answers to Chapter 12 Review Questions,” and “Reflection to Select Case Study.” In writing the reflection paragraphs, you should highlight the following: what are […]
In many buildings the walls are constructed of gypsum plaster board or dry wall. Gypsum plaster board is used as fire walls in many attics in garden apartments and other structures. Explain why gypsum plaster is used as a heat barrier. Discuss how many joules are needed to raise the temperature of 1 kg of gypsum plaster by 1°C. How many joules are needed to […]
Write the balanced chemical equation for the reaction taking place in the flasks for part 1. From the mass of KHP, calculate the moles of KHP used for each of 3 trials. Using the moles of KHP in each flask, use stoichiometry to calculate the moles of NaOH that were used to reach the equivalence point in each flask. Finally, calculate the molarity of your […]
Write the balanced chemical equation for the reaction taking place in the flasks for part 1. From the mass of KHP, calculate the moles of KHP used for each of 3 trials. Using the moles of KHP in each flask, use stoichiometry to calculate the moles of NaOH that were used to reach the equivalence point in each flask. Finally, calculate the molarity of your […]
Write the balanced chemical equation for the reaction taking place in the flasks for part 1. From the mass of KHP, calculate the moles of KHP used for each of 3 trials. Using the moles of KHP in each flask, use stoichiometry to calculate the moles of NaOH that were used to reach the equivalence point in each flask. Finally, calculate the molarity of your […]
Write the balanced chemical equation for the reaction taking place in the flasks for part 1. From the mass of KHP, calculate the moles of KHP used for each of 3 trials. Using the moles of KHP in each flask, use stoichiometry to calculate the moles of NaOH that were used to reach the equivalence point in each flask. Finally, calculate the molarity of your […]
1) What is the diffraction pattern for a horizontal array of lines? a)a horizontal row of dots , b)a square array of dots, c)a vertical column of dots d)a rectangular array of dots where the spacing between the dots is greater in the horizontal direction e)a rectangular array of dots where the spacing between the dots is greater in the vertical direction 2)What is the diffraction pattern for a […]
A plant manufacturing nails and screws uses a large pool (volume = 10,000 L) to collect and treat its residual waste water before discharging it in a nearby stream. The manufacturing process makes use of a strong acid (HCl) and a weaker one (phosphoric acid, H3PO4; pKa1 = 2.148, pKa2 = 7.20, pKa3 = 12.15), before discharging them in the pool for treatment (neutralization). Once […]
Experiment 5: prelab EXPERIMENTS IN CHEMICALEQUILIBRIUM, chem 206 (1.5 marks) Write the expression for the equilibrium constants for the followingreactions:a. N2(g) + 3H2(g) 2NH3(g)b. 2SO2(g) + O2(g) 2SO3(g) c. NH3(g) + HCl(g) NH4Cl(s) (3 marks – 1 here, 2 on next page) For reaction 2(a) above, suppose equilibrium has been established. Explain how and why the position of equilibrium will shift in response to thefollowing changes:a. […]
A. Discuss two ways that ammonium compounds decompose when they are heated. What chemical reaction is involved in the thermal decomposition of ammonium persulfate? B. What is the most likely reason OSHA requires ammonium nitrate to be segregated for sulfur or finely divided metals? Explain your answer. C. What is the most likely reason OSHA requires employers to protect flooring and handling areas in buildings […]
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