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- What is the percent magnesium hydroxide, if a sample of magnesia magma weighing 5.2430g when dissolved in 25 mL of 0.9915 N H2SO4 required 9.85 mL of 1.4102 N NaOH to titrate the excess acid? Round to 2 decimal point; Answer should be with the correct unit.Q1) A Sada- Lime Sample is g0% NaoH and 10% Cao. f 3 gm is dissolved in 250 ml, what is Hthe tutal normality of the Selutton as abase ? How many mililiters of 0.5N H2S4 woutd be required to titrate ioo me of the Solution? Ans. ( 0.309N, 60.59 ml)70 alll ll ? ..::0E is اجابة قصيرة A solution of Al2 (S04) 3 at a concentration of 0.3 N , What is the volume needed to prepare a solution at a concentration of 0.04 M in a volume of 150 ml of distilled water إجابتك كتب إجابتك. . is
- made upetement Zazum Adomica Abmcmas rop 418.28 Specific heat 19.42 173 13Jiter of (9) Artout How many moles Naoh are present in 218mL of 1.5M Solution? □ in Ins în chemil disit (5) which of had the (1) 4 moke Solute dissolved im (ii) s the following greast Concentration ? (iii) (10) 5 liter at Solution moles at Solute dissolved in 0.5 liters of Solution 6 moled of Solete dissolved im 0.5 liters of Solution s mole of solute dissolved liters of solution îm GIVE EXPLAINED HANDWRITTEN ANSWERExactly 0.2220 g of pure Na2CO3 was dissolved in 100.0 mL of 0.0731 M HCl a) What mass in gram of was evolved? B) what was the molarety of the xss HCl or Na2CO3
- Foreattt part of iTIS qtestfoni; tonsider FOHOWIHg Btetat: You need to make a stock solution of Ca( C2H3O2 )2 with a concentration of 6.50 M. You have a 850.0 mL volumetric flask available to make this stock solution in. You are then tasked with using this stock solution to prepare a sample for use in an experiment. The experimental sample should have a final volume of 15.0 mL and a concentration of 0.350 M Ca(C2H3O2)2. a) What is the molar mass of Ca(C2H3O2)2? b) How many moles of the solute would be needed to create the stock solution using the volumetric flask available? c) How many grams of the solute should be added to the volumetric flask to create the stock solution? d) What volume, in mL, of the stock solution should be used to prepare the experimental solution through dilution? US 目 Mالسؤال If the stock of H2S04 contain the following information %=35 Sp.gr.= 1.8 The concentration .M.wt.3 98 , The concentration of HS04 is 6.5 12 0.065Please ansuer the followiveg themocheawishry questian. Starchiometny or (and Vimitinal excess reagont calculations midht be mecessany. Please shew all wark and explain essay. Steps in details a) Haw much energu is produced when 93.5 Oxygan reacts with 13.2q hydrapen in the followng reaction? of grams 2H2 + Oz Đ2H2O Att= -572 KJ b) How many grans of magmesiaom sulfate woud be praduced fram the fallowine reaction if 176g of energy is absorbed the reactian: by Alz (sou)o f 3Mq Iz+2AI G+3Mg(304) AM= +722 KJ
- gascous ammonia, NH3lA) at reacts 3)/A 3.83L Volume of SIP is bubbled through lo8.0mb Water and Completley to form. R. aummonium hydroxide, NH40H (ag) a) what is the mdar concentration ot the resulding NHOH(aa) solkubion. 16) Whal mass of NH4 OH is present in the loo: Ome Solution. How moles of NHq OH would be sprasera present many în 482 mL ofa solution of he the Same IConcentration.The ascorbic acid, C,H;Os (176.124 g/mmol) content of a bottle of peach juice containing 2.50 L was determined by titration with a standard solution of potassium iodate, KIO3. The KIO; solution was prepared by dissolving 100.4 mg primary standard grade KIO; (214.001 mg/mmol) to a final volume of 250.0 mL. To a 200.00-mL aliquot of the sample, 10 mL of KI, 10 mL of HCl and 5 mL of starch solution were added and subsequently titrated, requiring 18.19 mL of the KIO; titrant. The relevant reactions are given below: KIO; + 5KI + 6H* → 3l2 + 6K* + 3H;0 CH;O, + l2→ CH,O, + 21- + 2H* a. How many millimoles of ascorbic acid is in the titrated sample? b. What is the mass of ascorbic acid per bottle of the peach juice?Q1 A) Calculate the Molarity (M) of solution result from dissolving 10 g of Silver nitrate AgNO3 in 250 ml of solution. (M.Wt- 169.9 g/mole) B) How many grams of NaCl are dissolved in 1 L and in a 0.250 M solution?