Choose the situation below that would result in a AHsolution near 0 A B OC OD DE O When IAH solvent! >> AHsolute! O When IAHsolutel > AHhydration! O When IAHsolutel
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- Lead poisoning has been a hazard for centuries. Some scholars believe that the decline of the Roman Empire can be traced, in part, to high levels of lead in water from containers and pipes, and from wine that was stored in leadglazed containers. If we presume that the typical Roman water supply was saturated with lead carbonate, PbCO3 (Ksp = 7.4 1014), how much lead will a Roman ingest in a year if he or she drinks 1 L/day from the container?**** (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+GEAR3 Bal, (aq)+ 2 Nag POq Caq) 7 BalPO42 + l6 Nal laq • Consider the reaction of 30.0mL of 0.270M Balz with 20.0 mL of 0.3ISM Naz PO4. Lwhat quantity in meles of Balz are preset in the solution? are produced /What quantitg in moles of precipitate E ali Bal were consumed based on the balanced chomical equation? 6) What auantity in males of Na3 Pla aro present in soluction? d) What quantity in moles of precipitate are paduced if all the Naz PO, were cansumed based on the balanced chemi.cal equation? e) which reactant is limisting f What mass (in g) of precipitate is firemed when the limiting reactant is considered?
- The indicator of Moher regent is. O KCro4. O KMN04..t to tuasd ssem uL () the The moralify of the souhm The mnany of the sonunon हुर्गज् strongest Type f the IMf fornd in this soution to ·a t o tusad Ssem of mg coH)2 in 300.0g %801.da, at punot seu woynios (alculate. て of water. The oensiy of the finoal ha unthosan unknown m n lo0ml of hwad 0.1000 M suliar reach the eauivo73 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.app.101edu.cо Question 14 of 15 Submit A solution of phosphoric acid (HPO,) with a known concentration of 0.250 M HAPPO is titrated with a 0.800 | M NaOH solution. How many mL of NaOH are required to reach the third equivalence point with a starting volume of 72.0 mL H,PO, according to the following balanced chemical equation: НРО, + 3 NaOH -> NA PO, + 3 Н.о 4 STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 0.800 6.75 x 104 2 1 0.250 0.0675 22.5 1000 3 67.5 7.50 72.0 0.001 43.2 L HAPPO mol NaOH М НАРРО g NaOH L NaOH mL H,PO, mL NaOH M NaOH g H PO mol HPO, +A l.00ml aliquot of flsh ol was andyud for N using the Kieldahl methad : Afler chqastim, the dishlled ammania collected in l0omlof 0:0503M HCl. The excess HCl required 28.3 ml of o.124M NgoH for titatiun.Cale, the amound ot Nin the somple of fish oil as mglml4.5 gm of oxalic auid/ foOH ) COUH presentin soomlor foletion. Therm Normalilay is ( Hint: COOH → C0 A) 0.1 B) 0-L C) 0.3 D) O. gSAn analyst wishes to add 256mg of CI to as reaction CMixture. How Many M:114ers of o.217M Bac12, Should be Added ?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.SEE MORE QUESTIONS