What effect does a catalyst have on a system in equilibrium?
a)the reverse reaction is favored.
b)the system is unaffected.
c)the forward reaction is favored.

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

Calculate the number of molecules present in 0.750 mol of mgo.

How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal