Balance the following chemical equation

What are the first three quantum numbers for the electrons located in subshell 2s?

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?

Why do cells appear different in distilled water than they do in 10% salt water?