(b)Calculate the number of moles of CuSO4 that were in the impure sample of CuSO4(s) . Need help now

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Aroller coaster is traveling at 13 mi./s when you purchase a hill that is 400 m long and down the hill exonerate at 4.0 m/s squared what is the final velocity of the posterior found your answer to the nearest number