The oxidation number of calcium in the compound CaCl2 has to be... A. -1 O
B.-2 O
C. +2 O
D. +1

(Edit)
Correct Answer C

attach the statements so i can answer : )

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.

i think it would be 5