4. When 15.0 g of steam drops in temperature from 275.0 °C to 250.0 °C, how much heat energy is released? (Cp of H2O = 4.184 J/g °C) 5. How much heat (in J) is given out when 85.0 g of lead cools from 200.0 °C to 10.0 °C? (Cp of Pb = 0.129 J/g °C) 6. A certain mass of water was heated with […]

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 […]

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. […]

Our textbook suggests that both soot and aerosols reduce the ability to see in a fire. Smoke is sometimes black and sometimes white in appearance. Create a three to five PowerPoint slide presentation explaining the reason for this difference. You may use various sources, including your textbook or other scholarly material; however, the point of this discussion question is for you to actively and skilfully conceptualize, […]

Question 1 What oxidizer is used to prepare the chemical referred to as piranha in the computer-chip industry?         Potassium superoxide               Hydrogen peroxide               Peroxydisulfuric acid               Sodium persulfate     4 points   Question 2 When bleach and ammonia are mixed, one of the chemical reactions is2NaOCl + 2NH3 ? 2NaONH3 + Cl2. Which reactant undergoes reduction?         NaOCl    […]

You are the project manager of an environmental company that was hired to cleanup a historical arsenic contamination site. Soil sampling results indicated the area impacted with arsenic above action levels is 30 feet by 55 feet. The depth of the arsenic plume is three feet below ground surface. The land owner wanted to clean this site for future development. Using your textbook, answer the […]

Every day, we are exposed to a tremendous amount of information about medications. Drug advertising is so common that many patients today have already self-diagnosed their symptoms by consulting “Dr. Google” and have already selected the medication they want based on the advertising they have seen.  Take note of all the drug advertising you are exposed to over a 24 hour period. You should include […]

In the literature study, emphasis should be placed on: • Give an overview of what important parameters are used to describe salmon quality. • Describe the different experimental methods that can be used to characterize the salmon fillet and what these methods can tell us about the quality of the fillet. Pay special attention to: o The difference between microscopic (molecular level) and macroscopic (bulk) […]