Astudent collects a sample of gas and finds that 1.01 g of the gas will fill a container with a volume of 0.225 l at stp. what is the molar mass of the gas?

Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .