## Intermediate Algebra: Connecting Concepts through Application

The hydrogen ion concentration of a healthy person's stomach acid is $= 4.37 \times 10^{-2} M$.
$pH = -\log [H^{+}]$ $1.36 = -\log [H^{+}]$ $[H^{+}] = 10^{-1.36}$ $= 4.37 \times 10^{-2} M$