The volume of a gas can be converted to moles by
A. dividing by 6.02 × 1023.
B. dividing by the ideal gas law constant.
C. multiplying by .
D. multiplying by the ideal gas law constant.

To use anything transparent

It equals just about 6,300 km per hour each day an week

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero.