What is the equilibrium constant expression Kc for the following balanced equation? N2 (g) + 3H2 (g) = 2NH3 (g)

Mr. rose asked his student to draw a quadrilateral with four unequal sides. an example of this kind of quadrilateral

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost

When can a hypothesis be elevated to the status of a theory? a) when it is validated by an experiment b) when data gathered from an experiment precisely fits predictions c) when it can be proved to be true d) when it meets the test of repeated experimentation