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

what is the question?

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.