What does the pH of a solution represent? A. The pH is an indicator of the salt content of a solution.
B. The pH tells how quickly a reaction reaches equilibrium.
C. The pH represents the partial pressure of hydrogen gas.
D. The pH indicates how acidic or basic a solution is.

(a) compute the maclaurin polynomial m2(x) for f(x) = cos x. (b) use the polynomial of part (a) to estimate cos π 12. (c) use a calculator to compute the error made using the estimate from part (b) for the value of cos π 12. remember that the error is defined to be the absolute value of the difference between the true value and the estimate.

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

Combine the information in the problem and the chart using the average balance method to solve the problem.