How many milliliters of 12.0 M HCl will be needed to create a 250-mL solution of 2.0 M HCI?

Which of the following can be used to measure electricity

Can someone me with 6 to 10 plz this is for masteries test.

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.