What is the volume of 2.43 x 1023 molecules of N, gas at STP?

Which feature do highland climates have that lower elevation areas do not?

Which of the following is true about the speed of light? it depends on the wavelength.

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 .