Asample of a compound made entirely from copper and oxygen was found to have a total mass of 0.1431g the mass of the copper in the compound was found to be 0.1271g. calculate the number of moles of copper in the sample.

The graph above shows how the price of cell phones varies with the demand quantity. the equilibrium price for cell phones is where both supply and demand quantities equal $100, 5,000 5,000, $100

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?

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid