Electrolysis represents a method to make a non-spontaneous redox reaction “go”. Metallic sodium is manufactured in an electrolysis redox reaction of sodium chloride, Na+ -Cl (NaCl). Sodium chloride is table salt, and it is obtained mainly from ocean water. The sodium chloride is melted and then a power supply initiates electrolysis and an anode and a cathode. The two half reactions are shown below and are also included in the image.  2 Cl- → Cl2 + 2 e- Na+ + 1 e- → Na   Which reaction occurs at the anode?

The element of the psyche that might make you feel guilty if you steal your little sister’s allowance is your

Morgan’s mother has just been diagnosed with bipolar disorder. Her mother is being hospitalized while a medication regimen is established to stabilize her moods. Which of the following medications are doctors MOST likely to use?

We can use Ecell to tell us about the thermodynamics of redox reactions in general, whether they are part of a voltaic cell or not. For example, metallic zinc, Zn(s), could react with molecular iodine, I2(s), to give zinc iodide, ZnI2. We can use the potentials for the two half reactions to determine Ecell and thus ΔG for this reaction to see if it would be spontaneous or not. ZnI2 is an ionic compound that is shown below with charges to make the nature of the redox reaction obvious. Zn(s)  +  I2(s)   →   Zn2+-I2(s) The relevant reduction half reactions wit their potentials are as follows (you will need to reverse one of these to convert it to an oxidation potential before performing your calculation):    I2(s) + 2e-  →  2I-(aq)                        Eo = +0.54 V    Zn2+(aq) + 2e-  →  Zn(s)                     Eo = -0.76 V Use the data above to calculate Ecell and thus ΔGr. Assume that Eo values in aqueous solution are accurate enough to be used. ΔG = -n . F . Ecell F = 96,485 Coulombs/mol

Which of the following is NOT an example of internal motivation?

Since her physician told Fabienne that she needs to lose weight to improve her health, she has been trying to eat healthily. But every time she goes out to a restaurant, she can’t resist ordering several unhealthy desserts. Her friends suggest that she try to eat the foods she craves in moderation, but she tells them that when she sees the sweets she’s not “supposed” to eat, she can focus on nothing but how badly she wants them. Freud would say that Fabienne’s ________ is encouraging her to overeat certain foods.

A small town in the Midwest is located near a regional toxic waste dump. Over the years, there has been an abnormally high instance of cancer among the residents in the town. Many of these residents are unrelated biologically, but have experienced similar types of medical issues. Which perspective best explains the high instance of cancer?

A gardener wants to estimate the average growth of all flowers in the garden after a heavy rain. The gardener measured the height of 14 flowers before and after a heavy rain. It turned out that the mean growth was 1.6 mm with a standard deviation of 0.4 mm. The distribution of the mean growth is mound-shaped and symmetric. The gardener wants to build a 95% confidence interval for the population mean growth. Find the critical t value that is required to construct the 95% confidence interval.

Lab will begin at 5:30pm on Tuesdays.

A clinical study is designed to assess the average length of hospital stay of patients who underwent surgery. A preliminary study of a random sample of 70 surgery patients’ records showed that the standard deviation of the lengths of stay of all surgery patients is 6.7 days. How large should a sample to estimate the desired mean to within 1 day at 95% confidence? (Round your answer up to the next higher whole number.)