amy has a mass of 30 kg, and she is riding a skateboard traveling 5 m/s. what is her momentum?
5 kg*m/s
6 kg*m/s
30 kg*m/s
150 kg*m/s

9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water

Describe the interaction that occurs between two objects with the same electrical charge.

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.