A. Detergent Properties Test Predictions Oil + Soap Oil Syndet B. Effects of Hard Water Test Soap + + Ca²+, Mg2+, Fe2+ Add oil Syndet + Ca²+, Mg2+, Fe2+ Add oil C.Effect of Water Softeners Predictions Test Soap +CaCl2 +Na3PO4 Predictions + Oil
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- cium chloride per liter. Express the centration in terms of milliequivalents of calcium chloride (CaCl2-2H20-m.w 147) per liter. con- 27. How many milliequivalents/of potassium would be supplied daily by the usual dose (0.3 mL three times a day) of saturated potassium iodide solution? Saturated po- tassium iodide solution contains 100 g of potassium iodide per 100 mL.oluce 28. An intravenous solution calls for the addi- tion of 25 mEq of sodium bicarbonate. How many milli 4%What is the easiest process to get to the result?1- If 50 ml of water is titrated with 10 ml of 0.0130 M of EDTA, what is the totalhardness of water as CaCO3 in ppm?
- ؟؟A reagent bottle contains 250 cm3 of 0,4 mol.dm–3 oxalic acid(C2O4H2) solution. Calculate the mass of pure oxalic acid thatmust be dissolved in this solution so that its new concentration is 0,6 mol.dm–3. Assume that the volume of the solution remainsconstantA mixture contains Na2CO3, NaOH and inert matter. A sample weighing 1.500 g requires 28.85 ml of 0.500N HCI to reach a phenolphthalein endpoint, and an additional 23.85 to reach a methyl orange endpoint.What are the percentages of Na2C03 and NaOH?
- [11-6d ] Which is the charge-balance equation for the solution that is 0.20 M in Na2HPO4? 1/2 [Na+] = [H3PO4] + [H₂PO4] + [HPO4²] + [PO4³-1 [Na] + [H3O+] = [OH"] + [H₂PO4] + [HPO4²-] + [PO4³-1 [Na] + [H3O+] = [OH¯] + [H₂PO4¯] + 2[HPO4²-] +3[PO4³-] [Na] + [H3O+] = [H3PO4] + [OH"] + [H₂PO4] + 2[HPO421 +3[PO4³-]You have a separatory funnel containing an immiscible mixture of 1-octanol (d = 0.824 g/mL) and aqueous NaOH. If you add the five compounds below and shake the funnel to mix, which compound(s) will be in which layer? LOH NH2 HO. A В C -OH D E A [ Choose ] Bottom Layer Тop Layer В TeHOuse jT [ Choose ] D [ Choose ) [ Choose ]Twenty sodium salicylate tablets labeled 325 mg were dispersed in sufficient water to make 200.0 mL. A 15.0–mL aliquot of the filtrate was titrated to a bromophenol blue endpoint in the usual way by 32.11 mL of 0.1000 N hydrochloric acid. Calculate the amount of sodium salicylate in each tablet, and from that, the percentage of the labeled amount. (NaC7H5O3 MW = 160.11 g/mol) Amount of sodium salicylate in each tablet = % labelled amount =
- (83,111 Uhread) - hiva.mcgee87 X e 2 new messages takeAssignment/takeCovalentActivity.do?locator=assignment-take [Review Topics) [References) Use the References to access important values if needed for this question. How many mL of a 0.202 M aqueous solution of manganese(II) acetate, Mn(CH3COO)2 , must be taken to obtain 16.0 grams of the salt? ml Submit Answer Retry Entire Group 9 more group attempts remaining eq reg 2reg 2req 2req Cengage Learning | Cengage Technical Support 林 98°F Rain coming PrtScn PgDn DII Home End F10How many grams of Ba(103)2 (487 g/mol) can be dissolved in 500 mL of water at 25°C. (Ksp of Ba(103)2 = 1.57 x 10-9) %3D Ba(103)2 Ba2+ + 2103 O 0.122 g O 0.926 g O 0.178 g 0.221 g O 0.298 gSixty mL of an impure acid solution was diluted to 500mL. A 30.00mL portion of this solution was titrated with 25.00mL of 0.1230M NaOH solution. Calculate the % (w/v) HAc in the sample. (FWt HAc = 60) Show all the solutions involved and round-off final answers to two decimal places except for Molarity. (Molar concentrations should be in four decimal places)