What effect does a catalyst have on a reaction? O A. A catalyst increases the concentrations of products.
O B. A catalyst makes it possible for a reaction to happen.
O C. A catalyst speeds up the rate of a reaction.
O D. A catalyst contributes energy to a reaction.

Can someone me with 6 to 10 plz this is for masteries test.

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules