Which of the following reactions occurs at the anode in a voltaic cell? cu2+ (aq) + 2e– → cu (s)
cd2+ (aq) + zn (s) → zn2+ (aq) + cd (s)
k+ (aq) + e– → k (s)
mg (s) → mg2+ + 2e–

In an improper fraction, is the numerator equal to, less than, or greater than the denominator

What is the measure of one interior angle of a pentagon

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2