Compute the hydroxide ion concentration in a NH3 solution that is 0.091 M and 0.028 M NH4Cl. Kb of NH3 is 1.8 x 10-5.
Using a sample of gas of mass of 38.7 mg ,volume is 220 ml , temperature of 57 degree Celsius and a pressure of 883 torr . Determine the molar mass and express your answer in g/ mol, of the gas??