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- Q10) A tablet that contained 500 mg of vitamin C (Molar Mass = 176 g/mol) was titrated with 20.15 ml. of KIO, to the blue end point. The same KIO, solution was used to titrate 12.1 mL of a commercial juice blend. The juice blend required 2.40 ml. of KIO, to reach the end point. How many milligrams of vitamin Care in the sample of juice blend a) 0.047 mg b) 0.05956 mg c) 47.0 mg d) 59 56 TEWhat is the molality of lithium ions in an aqueous solution made up of 0.302 m Lİ:PO4 assuming the compound dissociates completely? STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) %3D G 4 115.79 0.001 0.302 35.0 1 6.022 x 1023 0.906 1000 1.21 0.101 g Li:PO4 mol LisPO4 m Li:PO4 g Lit m Lit kg solvent g solvent mol LitSTARTING AMOUNT X What is the molality of lithium ions in a 0.302 m solution of Li PO, assuming the compound dissociates completely? ADD FACTOR x( ) 1 mol Lit 4 6.022 x 1023 0.001 35.0 mol Li,PO g Li,PO 115.79 0.302 m Lit m Li,PO ANSWER 3 0.906 1.21 0.101 g solvent kg solvent RESET 2 1000 g Lit
- 7:37 PM Fri Feb 26 + AE ... I U which depends on the number of solute particles. So, if the same solute is added then elevation in boiling point depends on the concentration. Higher the concentration, the higher the boiling boint. 2. Which solution below would have the lowest freezing point below? a) 0.75 M NaCI (aq) b) 0.15 M NaCI (aq) c) 1.00 M NaCI (aq) Explanation: 3. Which solution below would you expect to have the highest boiling point? a) 0.5 mol of CaCl, in a 200 mL aqueous solution p) 0.5 mol of KCI in a 200 mL aqueous solution =) 0.5 mol of AlICI3 in a 200 mL aqueous solution Explanation:A)What is the H+H+ concentration for an aqueous solution with pOHpOH = 3.54 at 25 ∘C∘C? Express your answer to two significant figures and include the appropriate units. b)At a certain temperature, the pHpH of a neutral solution is 7.49. What is the value of KwKw at that temperature? Express your answer numerically to two significant figures. c) answer the attached imageWhat volume of 0. 2 00 M HCl is required to react completely with 1 . 68 g of sodium hydrogen carbonate? MW NaHCO3, HCl, NaCl, CO2 and H2O are 84, 37, 59, 44 and 18. NaHCO3( aq ) + HCl( aq ) ⟶ NaCl( aq ) + CO2( g ) + H2 O( l
- To find the molarity of sulfuric acid, H,SO, it is titrated with 0.9 M KOH. It requires 22.5 mL of KOH to neutralize a 85.6 mL sample of sulfuric acid. Calculate the concentration (mol/L) of the sulfuric acid. H,SO,+2KOH→K,SO,+2H,O « Previous Next No new data to save. Last checked at 1:35pm Submit DOLL EVD RW MUTNSTARTING AMOUNT X What is the molality of lithium ions in an aqueous solution made up of 0.302 m LisPO4 assuming the compound dissociates completely? ADD FACTOR x( ) 0.302 115.79 0.101 DELETE t 35.0 1000 kg solvent m Li³PO4 mol Li³PO4 6.022 x 10²3 1.21 mol Lit g Lit = ANSWER 3 0.906 4 0.001 g solvent g Li3PO4 RESET 3 1 m LitSTARTING AMOUNT X = Glycerol (C3H8O3) is a byproduct of soapmaking. What is the molality of a solution made by dissolving 155 g C3H8O3 per L water ? The density of water is 1 kg water/L ADD FACTOR x( ) 1680 6.022 x 1023 16.8 1 DELETE t 1.68 1000 0.594 ANSWER 15.5 594 59.4 g C3H₂O3/mol m C3HO3 mL water g C3H8O/L water g C3HsO3 mol C3H₂O₂ kg water/L 0.001 RESET 3 92.09 kg water 155 L water
- Each row of the table below describes an aqueous solution at about 25 °C. Complete the table. That is, fill in any missing entries in the second column. Be sure each entry you write includes the correct number of significant digits. [4,0"] solution pH Imol/L A 6.12 I molL B 9.17 I mol/L 1.09Calculate Normality directly 1. Calculate the Normality of a 1.2m calcium hydroxide Ca(OH2) ; Ca+2+(OH-) 2. Calculate the Normality of Ca(OH)2 solution containing 6.32g of Ca(OH2) in 5.85 L solution.20. Determine the concentration of uncomplexed Cu* when 50 mL of 0.25 mol/L CuCl; and 450 mL of 0.50 mol/L NACN are mixed. Cu (aq) + 4 CN (aq) Cu(CN). (aq) (Answer: [Cu) = 8.13-10" mol/L)