What is the largest source of freshwater on earth?

large lakes

ice sheets, glaciers, and icebergs

groundwater

rivers

Calculate the number of moles of ethane in 100 grams

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?

How are the terms group and period used on the periodic table