20 mL solution of 1.5 M CaCl2 is mixed with 50 mL of 1.5 M NaCl solution. What is the concentration of Cl- the mixed solution?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

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.

Which item is most likely part of the safety contract