What are the 4 kingdoms listed in the Eukarya Domain? List all 4 Kingdoms

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Identify the electromagnets with poles that are reversed from the electromagnet shown above

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.