dow many grams of Anilin çHs NH2 Should be solved in water to Prepare I liter containg oH iong Know that Kb CAniline)=410 a Solution of with -6 2*10 -10
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- 73 Al ihe school ey decided to adt sodum carbonae (NaCOJ tohe sampled wster in the school tankin order to restore he sttavalue close to The balanced equartion for the reaction is Na,Co.e) + 2HC (ag - 2Nac (ag • H0()• co; (al 731 Calcuate the mass of sodum cartonate (Na,CO.) required to neutralize each 1 dm' of the sample water 732 Ater the neutralization. the water tasted saty. Give a reason for the saly taste of the water Refer to the equation above.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. . isguiestior #O Triat 1. 1.50 1.50 1.50 2.00 2. 3.00 2.00 4.00 3.00 3:00 what es Hiurate comlent tn Herealier above?
- 0,500 of Nacl containing scmple weigh 25ML of cund treat with 0.1086 M mpNO3 sowhen. The remaning nou? rs 11.3mL of ol010 M KSCN. HOW many Nacl tArated with found m the sample? Find mass percantape NOu M the Sample ? CNOCI =58.5 plmol)The following Balancethis 38: The following . reaclion is unbalanced lithium- vy. Iodide redos batt s ng. readion that Show all was discubed in the eadt the stehs to balance this lquation di + I 1. ーフdiT. Steh1: dutherrs oxidallion numberb Show the OKedation رمطه of g the table each number of spucies using below Via the lquatiên .cnd arroiv syste equetion.und in class: (2) sydem that we used Reactant OX# Producd Li0 Cals) + NAC lag) – O White the balanced molecular chemical equation for the reachion f Solid lithium with aqueo us Chromium (111) acetat: 4 no iea chun occurs, write UR. Idaite a balanced molecular Chemical equahion for the Solia Sodium with aqueous Zinc perchlorite . 7 no geaction ccuns,
- insoluble O no one of these O ahai If we take (3g) of Sodium Hydroxide in (100mL)volumetric flask and add the distilled water, the concentration of the solution will be 0.75 mole (O 0.65 mole O 7.5 molarity O No one of these O37R37S nL of OilooM ealetum chloride reacts complalely with aques lyer nitrate iuhat s the 143.32 al mol) O.100M eaet (१०७.९ Co९० ) mass of Aa C! precipitale? Caclalag)+2Foreattt 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 M
- (6) total lonio al 1unio eanATion (C) ne t lonio componnd 24. NH4OH Co(NO,)2 (a) balancedeauation (b) total lonlceauation ccl net lonic eauation5. A solution containing 15 mmole of CaSO, is diluted to 250 mL. The number of milligrams of CasO4 2H;0 per ml of the final solution is (Atomic weights: Ca 40, S =32, 0 = 16, H = 1):**** (5) 3 Opper mctal (ind Concentad ted und aad be oonsis hange in , releare of lgas mredcolo color to green releave of gas mn Hedcolor INU we and thabbles in thi botton solutim Not HNU3rani 3(Q) Hy Dnt (uNOgndi (L) Balanced Net Ionic Equation No.2/CHB en+GEAR