Discover Questions

I took my menengitis shot 2/2012 & took it again in 12/23/16. I was wondering if the shot is valid to be able to enroll in college courses.? Why do females give birth and males don't? What s are the differences among yield stress, yield strength, and ultimate tensile strength? Does sqrt((-2)^2) equal to -2 or 2? PH of a solution that results from mixing together equal volumes of a .0600 M solution of NH3 and a .0300 M sol'n of HCl? pKa of NH4+=9.25.?