Pilots of hot air balloons are able to steer them somewhat by moving them up or down to enter different air currents that move in different directions. Explain how the flame can be used to do that.

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

What information does a complete ionic equation give that the balanced equation doesn’t show?