ions and their charges

name charge symbol or formula
lithium li+
1+ na+
calcium 2+
chloride 1?
1? no3-
carbonate 2?

which of these ions are polyatomic? explain.

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)