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Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter20: Environmental Chemistry-earth's Environment, Energy, And Sustainability

Section: Chapter Questions

Problem 41PS

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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.
(a) In 20 or less of yourown words define the term “leachate”and describe how it forms. (b) Previous records had shown that to prevent acute toxicity to organisms, the maximum mass of CdSO4 that should be allowed into the landfill was determined to be 0.1 kg. This was calculated using a standard concentration of Cd in mg/L where the volume of the leachate pond was used as 500 000L. (i) Provide the name of the CdSO4 compound. State the oxidation number of Cd in this compound (ii) You need to ensure that the concentration used to determine the mass of Cd allowed in the landfill, meets the current regulatory standard. Assuming that previous calculations determined that all of the CdSO4 would be deposited in the leachate pond, what standard concentration of Cd in mg/L was used to determine the maximum mass of allowable CdSO4?
barkamishen seslb to doing Bittetsbau nA sideT oibore peivab ot etsimodo it as lendas suchombre or to agninnigod adr oldmseen polls anoitoleaimora ni baya Solovi immediabudinng enoitonen Isolmarlo lo coqyt Istoresbout wot ybuta lliw s Croborecho ofnino2s1 ayow ribi of 5) Analysis of 1.618 g of a hydrate salt gave the following information. Iliw Pb: 0.884 g, C: 0.205 g, H: 0.026 g, O: 0.273 g, and water: 0.230 g.o Inters What is the formula of the hydrate. sob a ogrobimu snocheoid bas in botser asce ed with asmolo s nad oson inmoasigaib to savi Inomalo srit 'il bogoo oinai is gaininos nouutos of babbe smogod bis noi si di autosis syneriozs Irw ticodulos ni noi ni nobnice to bilo 25ml produced flash and poppe carolionoriconic lieth noitonen inomossigen sigme yd elas Jabot ovi HA obrtw scale 6 10 enolonias pozemol adi ni ailuas, noitufos at devan gods got abou odregos bazum o obnoldo miuiboa bar otain rovlie to anoituloa asrl W SiT moironen insmoelor siduob a lo loss of an emot…
A sulfuric acid plant produces a considerable amount ofheat. This heat is used to generate electricity, which helpsreduce operating costs. The synthesis of H2SO4 consists ofthree main chemical processes: (a) oxidation of S to SO2,(b) oxidation of SO2 to SO3, (c) the dissolving of SO3 inH2SO4 and the subsequent reaction with water to formH2SO4. If the third process produces 130 kJ/mol, howmuch heat is produced in preparing a mole of H2SO4 froma mole of S? How much heat is produced in preparing5000 pounds of H2SO4?
When jump-starting a car with a dead battery, the ground jumper should be attached to a remote part of the engine block. Why?
Gold is produced electrochemically from an aqueous solution of Au(CN)2 containing an excess of CN. Gold metal and oxygen gas are produced at the electrodes. What amount (moles) of O2 will be produced during the production of 1.00 mole of gold?
A fertilizer railroad car carrying 34,300 gallons of commercialaqueous ammonia (30% ammonia by mass)tips over and spills. The density of the aqueous ammoniasolution is 0.88 g>cm3. What mass of citric acid,C(OH21COOH21CH2COOH22, (which contains three acidicprotons) is required to neutralize the spill? 1 gallon = 3.785 L.
Calc ulatetheconcantrationoF Potassiamioningrans Perliterof termixing loomlof0.250M Kel n 20oml of o loo M K 2Soa (atonic weight k 37-1ms(ma)
(Last Day Promotio... Kronos Worktorce... Maame Acheampo... MIDTERM M [Review Topics] [References] Use the References to access important values if needed for this question. How many grams of Ag,CO3 will precipitate when excess Na,CO3 solution is added to 77.0 mL of 0.690 M AGNO, solution? 2AGNO3(aq) + Na,CO3(aq) Ag,CO3(s) + 2NAN03(aq) + 2NaNO3(aq) Submit Answer Retry Entire Group 9 more group attempts remaining
30jud to 28AM basu mw 5. Sodium carbonate is a reagent that may be used to standardize acids in the same way that you have used KHP in this experiment. In such a standardization it was found that a 0.498-g sample of sodium carbon- ate required 23.5 mL of a sulfuric acid solution to reach the end point for the reaction.
Balance the cquation C,H18() + 0>(g)→ CO,(g) + H;O(g) CO,(g) + H,0(g)
Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, write NR after the reaction arrow. Be sure to include the proper phases for all species within the reaction. CsCl(aq) + K,PO (aq) @ 2 W S X JE 3 E D C 1 80 + $ 2 3 Reset 4 Cs R ( F V MAR 22 % 5 T G 4 4 04 P K 6 B 5 Y - H ☐ 6 tv & 7 (s) N 06 07 08 09 ☐o CI O 2+ 44 F7 Music U 7 8 9 J 34 x H₂O * 00 8 DIL FB 04+ I M (g) (aq) NR Delete ( 9 0 K DD S O < 1 ) -O D L P a F11 + {