F. How many centigrams are in 253,000 picograms?

How many atoms are there in 5.70 mol of mg

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?

What does the mass of 0.7891 mol of ferric oxide (fe2o3)