What mass of Zn(NO3)2 must be diluted to a mass of 1.00 kg with H2O to prepare 97
ppm Zn+2*(aq)

Calculate the molarity of the solution. 6.02 x 1022 molecules of hci (molecular weight = 36.5 g/mole) in 2.0 liters of water m

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

Find the midpoint of a segment with endpoints of 4-3i and -2+7i