What was the concentration of my stock solution if I used 23mL of it to make 102 ml of 1.4 M dilution?

What is the independent variable in this investigation? mass volume sample number substance density

Which statement is true according to the kinetic theory? a. molecules of different gases with the same mass and temperature always have the same average density. b. molecules of different gases with the same mass and temperature always have the same average volume. c. molecules of different gases with the same mass and temperature always have the same pressure. d. molecules of different gases with the same mass and temperature always have the same molecular mass. e. molecules of different gases with the same mass and temperature always have the same average kinetic energy.

Describe the basic structure of the atom