What is the mass number of an atom which is made up of 27 protons,33 neutrons and 27 electrons?

Use the gizmo to find the concentration of the mystery ch3cooh. use the titrant and indicator shown below perform the titration. what is the titrant volume? titrant analyte indicator titrant volume analyte concentration naoh ch3cooh phenophthalein select one: a. 20.0 ml b. 27.0 ml c. 30.0 ml d. 24.0 ml

What is the relation between concentration of reactants and the rate of chemical reaction?

In 2002, the rare earth elements mine in mountain pass, california was closed because