36. Which of the following compounds is expected to be the most soluble in H½0? „NH2 II IV A) I B) II С) ш D) IV

Part 1 of 2 Determine the pH of a 0.25 M NH3 solution. Be sure your answer has the correct number of significant digits. Note: K for NH3 is 1.78 × 10-5 pH = Part 2 of 2 x10 Determine the pH of a solution that is 0.25 M NH3 and 0.35 M NH4Cl. Be sure your answer has the correct number of significant digits. pH = X

A student prepares a 1.1 mM aqueous solution of 4-chlorobutanoic acid (C3H, CICO,H). Calculate the fraction of 4-chlorobutanoic acid that is in the dissociated form in his solution. Express your answer as a percentage. You will probably find some useful data in the ALEKS Data resource. Round your answer to 2 significant digits. % X S

where did the 0.0257 come from?

Please help

A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of chloroform, ethanolamine, dimethyl sulfoxide, pentane, and carbon tetrachloride. The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from his collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid chloroform density 1.5 g cm 3 ethanolamine 1.0 g-cm dimethyl sulfoxide 1.1 g cm pentane 0.63 g-cm carbon tetrachloride 1.6 g-cm Next, the chemist measures the volume of the unknown liquid as 0.688 L and the mass of the unknown liquid as 543. g. Calculate the density of the liquid. Round your answer to 3 significant digits. Given the data above, is it possible to identify the liquid? If it is possible to identify the liquid, do so. gcn cm yes no chloroform ethanolamine dimethyl sulfoxide pentane carbon tetrachloride X 5…

Each sketch below shows three objects with an electric charge. In each case, decide whether there is a net force acting on the object outlined in green. If there is a net force, decide whether it pushes the green-ring object to the left or right. Then select the appropriate button under the sketch. For example, if there is a net force pushing the green-ring object in the first sketch to the left, select the left button under the first sketch. If there is no net force on the green-ring object in the second sketch, select the middle button under the second sketch. And so on. ola -2 +3 -2 -2 I Don't Know Submit 2022 McGraw Hill LLC. AL Riahts Reserved. Terms of Use I Privacy Center Accessibility etv 16 Dl 18 80 & % 6 7 8O 4.

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Please complete the calculations related to pH, pOH, [H3O+], and [OH-]. Remember there are special rules related to significant digits when working with pH, pOH, [H3O+], and [OH-].  A sample of household vinegar was measured to have a hydronium ion concentration of 5.8 x 10-3mol/L.  Determine the pH of the sample.  Hand soap is effective at preventing bacterial contamination.  Calculate the hydronium ion concentration in a brand of hand soap with a pH of 10.1Human saliva contains enzymes that start the process of digestion.  Human saliva typically has a hydroxide ion concentration of 1.2 x 10-8 mol/L.  Determine the pOH of saliva. Human blood is slightly basic.  Calculate the hydroxide ion concentration in a sample of blood with a pOH of 6.55