What is the concentration of OH-ions in a solution that contains 1x 10^3 M H+?? O 1x10-11 M
O 1x10-17 M
O 1x10-3M
O 1x10-4 M.

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?