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Hw () Detevmine the molavity f ench of the folloring a 1.5 mol. kcl in 1.SL Solution of solu n. 0.5 gm f Hz Sou in L 20 gm of AI( No3)s in Soo ml , sdu4io- a 2.25 kg of Cusoy in 1.45 LoF solution O o.006 mol. of Brzin To mL of Solic O. 0 0075 gm of C,HS Noz inl.osmL of solut ion Hint '. The at omic numbere used in the above Problem are O = 16 H= 1 Cu: 29 Br: 35 K= 19 C1-呼 S: 16 Al 13 N = 7

+. ca(NO3), ,+ ?H3PO4 Caz(poht_+HNO3 -> Whan the eguation is balanced, the coefficient in frot of H3P04 is ?

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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)

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.

0 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,

How do i find the % N

Please 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

2 3:35 D 59% fll 2º.l|& ©'O Orange JO UMNIAH [Template] Ex.. -> Yield Calculations cyclohexanone, calculate the percentage yield of the reaction? If you used 50 ml of cyclohexanol and you got 40 mL 3 Discussion References

(6) total lonio al 1unio eanATion (C) ne t lonio componnd 24. NH4OH Co(NO,)2 (a) balancedeauation (b) total lonlceauation ccl net lonic eauation

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The indicator of Moher regent is. O KCro4. O KMN04.

many grams of Anilin GHs NH2 Should be Solved in water to Prefare dow a Solution of I liter containg oH iong Know that Kb (AnilWhe)=4*/0 with -6 2* 10 -10

O Course Home b Details | bartleby O X -> A openvellum.ecollege.com/course.html?courseld=16561285&OpenVellumHMAC=dd25775cc7b85cec3204f753df519590#10001 Q * E Apps O Maps E Connect - To Do As... O ocCC Moodle P chem work b help A Balance Chemical E. Gmail YouTube CHEM-1123-EW40S Late Spring 2021 Sign Out Help Hi, ashlee v Mastering Chemistry Course Home O My Courses Syllabus Part A Scores Identify which of the following are carbohydrates. Check all that apply. еТext • View Available Hint(s) Document Sharing Но User Settings CH, Course Tools > H CH-O, H OH H C-C OH H OH OH H H O H-Ö -NH, H. ОН ОН ОН H H H H-C- -C С—С—ОН ОН ОН ОНн O H O HO-C- -C-C-OH ОН ОН ОН 10:39 PM P Type here to search 99 3/10/2021

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A sample of magnetite  (impure Fe3O4) weighing 0.4500 g is fused with oxidizing flux and the ferric compound formed is eventually precipitated as ferric hydroxide and ignited to ferric oxide (Fe2O3MM 159.70 g/mol)  which  weighs 0.4890 g. Calculate % Fe.   At. mass    Fe 55.85        O 16.00

guiestior #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?

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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 M

Calculation of AH; of Magnesium Oxide Mg + 2 HCI MgCl2 * Hz2 AH, = kJ/mole MgCl2 +H2O > Mgo + 2 HCI -AH2 = kJ/mole He + 를 O2 + H2O AH3 = - 286 kJ/mole net: Mg + 을 O2- MgO 사Hnet = kJ/mole The literature value for the AHf of magnesium oxide is -602 kJ/mole.

Brllance the following eQuations by /inserting the smallest whole number Coefficients nessapy (enter dll coefficants that Insert incluting any value of "/i/ have a TiOz HCI 4 3