Prepare 100ml of 10mM NaoH solution from 10M stock solution NaoH , M. wt of NaoH =40?

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

How are elements arranged in a periodic table

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.