If you have a stock solution of 10 M HCl and you want to prepare 200 mL of 4 M HCl, what volume of the concentrated acid should be added to what volume of water? (Assume volumes are additive.)

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

You wish to prepare a buffer consisting of acetic acid and sodium acetate with a total acetic acetate plus acetate concentration of 250 mm and a ph of 5. what concentrations of acetic acid and sodium acetate should you use

15. what volume of cci, (d = 1.6 g/cc) contain6.02 x 1025 cci, molecules (ci = 35.5)(1) 10.5 l(2) 250 ml(3) 9.625 l(4) 1.712 lplz answer with step by step explanation