What kind of chemical change do you think occurs when a banana peel turns brown in the open air?

Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?

Listed below are the amounts of mercury (in parts per million, or ppm) found in tuna sushi sampled at different stores. the sample mean is 0.836 ppm and the sample standard deviation is 0.253 ppm. use technology to construct a 90% confidence interval estimate of the mean amount of mercury in the population.

Sharon reads two different articles about avocados. the first article, in a weight loss magazine, claims that avocados are unhealthy because they are high in fat. the second article, in an annual publication from a doctors' group, claims that the fat in avocados is a type that is good for the heart.