Your friend Joe recently visited the doctor for steroid inje…

Your friend Joe recently visited the doctor for steroid injections into his knee to reduce swelling due to a previous knee injury. Within a couple of days, he had an infection caused by Pseudomonas, a very pathogenic and drug resistant bacterium. Luckily, Joe went to the doctor immediately and received antibiotics. The doctor tells him that the same problem has occurred to many other people across the United States. Predict the most likely cause of this situation.

Magnesium metal reacts with hydrochloric acid according to t…

Magnesium metal reacts with hydrochloric acid according to the equation: Mg(s) + 2HCl(aq) –> MgCl2(aq) + H2(g) In an experiment 0.158 g of Mg metal is combined with enough HCl to make 100.0 g of solution with a specific heat capacity of 4.184 J∙g–1∙C°–1 in a calorimeter. The temperature of the solution rises from 25.6 oC to 32.8 oC.  What is the change in enthalpy,