Areaction is zero order in a reactant. which best describes what happens to the rate if the concentration of that reactant is cut in half?
a: the rate changes to twice the original rate.
b: the rate changes to one-half the original rate.
c: there is no change in the rate.
d: there is a decrease in the rate when there is only a single reactant.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of