There are many, many stars in our universe. in which of the following do all stars appear to be quite similar? a. temperature b. chemical composition c. distance from our solar system d. age

Diamond, graphite, and fullerenes share what property? a. they are all made of carbon (c) bonded to a metal. b. their shape. c. they are all made of carbon (c). d. they are all good conductors.

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

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.