Catalysts increase the rate of a reaction by

By lowering the activation energy.

Explanation:

A catalyst refers to a substance, which enhances the rate of a chemical reaction without chemically getting changed at the termination of the reaction. They never generate more product, they just generate the same concentration more briskly.  

A catalyst functions by providing an alternative pathway to lower the activation energy. This signifies that more of the collisions occurring will exhibit the essential activation energy. Thus, there will be more effective collisions per second.  

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.