4) An unlabeled laboratory solution is found to contain an OH ion concentration of 6.7 x 10-6 M. What is the H+ concentration in the solution?
A) 6.7 x 10-20 M
B) 6.7 x 108 M.
C) 1.49 x 10-20 M
D) 1.49 x 10-9 M

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.