42. What is the source of the electric current produced by a voltaic cell?

a spontaneous oxidation-reduction reaction

competing salt bridges

non-spontaneous reduction at the cathode

an imbalance of ion charges

Which of the following is a chemical property? A. Ability to change color upon exposure to air B. Ability to conduct electricity C. Ability to conduct heat D. Ability to become magnetic

Find the ph of of 100 ml of an aqueous 0.43m baoh2 solution

A science class did an experiment in which two substances were mixed. After 15 minutes, everything looks the same, but the students noticed an odor coming from the experiment. What does this likely indicate? a.) a liquid was formed. b.

7. Is an atom with 6 electrons in the outer shell more likely to gain or lose electrons? Why?

Can a bad thermostat cause radiator to blow

Separates substances based on their movement through a special paper

The correct answer is c. Energy processing from corn biofuels is not energy efficient.

When thinking about genetic engineering in agriculture, which type of issue has the most direct consequences? economical issues political issues social issues environmental issues

Which mixture is most likely to form a suspension? flour and liquid water, as in gravy metal coins and liquid water sodium chloride and liquid water tiny water droplets and the air, as in a cloud?

Will give brainliest! Given the following balanced equation: 2K + Br2 - -> 2KBr A. List each element on the reactant side and each element on the product side and assign the correct oxidation number to each. B.