What is the relationship between the amount of protons and electrons in a positive ion?

Express the following number in scientific notation. 0.026890 =

What is true for a substance that releases energy

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.