Calculate the pH at 25 °C of a 0.68M solution of potassium cyanide (KCN). Note that hydrocyanic acid (HCN) is a weak acid with a pk of 9.21. Round your answer to 1 decimal place. -0 pH = X

Write the number "fifty" in numerical form giving one significant digit

References Use the References to access important values if needed for this question. When 52.7 and 84.3 are multiplied, the answer should be reported to significant digit(s). The product reported to the correct number of significant digits is Use scientific notation to express your answer. The sum of 52.7 and 84.3 should be reported with the decimal point. The sum reported to the correct number of decimal places is Submit Answer digit(s) after

Round to 3 significant figures 3.185000

For each trial use the mass of water and its density from Table 1.1 to determine the volume of water actually delivered.

MRe Part A pH 9.0 Express your answer using one significant figure. 阳 AE中 (H3O*] = Submit Request Answer Part B pH 9.0 Express your answer using one significant figure. ? %3D = (-HO] Submit Request Answer Part C pH 2.0 Express your answer using one significant figure. P Pearson