Write the overall equation for the reaction
occurring in a lead-acid cell during dis-
charge. What happens to the sulfuric acid
concentration during this process? Why is it
possible to use a hydrometer, which meas-
ures the density of a liquid, to determine if
a lead-acid cell is fully charged?

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.