In cell notation, all species appearing to the left of the double vertical line represent:. a. the anode.
b. the cathode.
c. the salt bridge.
d. a phase boundary.

What is important to study for nios grade 12 chemistry? i have only one month left.

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)