What is the mass of a 1.68-l sample of a liquid that has a density of 0.921g/ml?

Iwill give extra points to who gets this right

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?

Based on its chemical properties, identify the position of each chemical family on the periodic table.