How many grams of Kr are in a 4.15 L cylinder at 40.7 °C and 2.66 atm?

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

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?

Areaction in which products can react to re-form reactants is