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Which is a weaker donor (analogous to weaker base)? As, Mn
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- 5. The color change of a chemical indicator requires an overtitration of 0.03 mL. Calculate the percent relative error if the total volume of titrant is a. 50.00 mL b. 10.00 mL 6. From the Gaussian (normal) error curve, what is the probability that a result from a population lies between 0 and +1 σ of the mean? What is the probability of a result occurring that is between +1 σ and +2σ of the mean?Given: 3 Pt2+(aq) + 2 Cr(s) ⟶ 2 Cr3+(aq) + 3 Pt(s) Eo = +0.44 v [Cr3+] = 0.512 M, [Pt2+] = 0.00318 M Calculate the value of E. E = Eo - (0.0592/n) log Q Express the answer to 2 sig. figs.Mn04 (aq) + SH"(aq) + 5e → Mn2"(aq) + 4H201) Cry0,2 (ag) + 6e → 2Cr*(aq) + 7H2O0) Cu2" +1.51 V +1.33 V *(aq)+2e Cu(s) (aq) + 2e Pb(s) (aq) + 2e→ Fe(s) +0.34 V -0.13 V Fe2+ Al3*(aq) + 3e → AI(3) -0.44 V -1.66 V Refer to Exhibit 17-1. Determine E cell for the electrochemical cell designated by the cell notation below. Al(3) | Al3* (ag) || Cu2*(aq) | Cu(s) O a. +12.0 V O b.+5.66 V Oc.-2.00 V O d.-1.32 V O e. +2.00 V
- 1. Zn | Zn²+(1.0 M) || Cu²+(1.0 M) | Cu 2. Zn | Zn²+(1.0 M) || Cu²+ (0.1 M) | Cu 3. Zn | Zn²+ (0.1 M) || Cu²+ (1.0 M) | Cu 4. Zn | Zn²+(1.0 M) || Pb²+(1.0 M) | Pb 5. Zn | Zn²+ (1.0 M) || Pb²+ (0.1 M) | Pb 6. Zn | Zn²+ (0.1 M) || Pb²+(1.0 M) | Pb 7. Zn | Zn²+(1.0 M) || Ag* (0.1 M) | Ag Ecell (measured) 0.890 0.810 0.730 0.350 0.330 0.280 1.200 Reaction Quotient E cell (calculated) Ecell (calculated)The molarity of a solution is determined by four separate titrations or replicates, where the obtained data was 0.4120, 0.4920, 0.3920, and 0.4320 M. Calculate the standard error of the mean for the above data. O 0.00185 O 0.02160 O 0.43200 O 0.04320 O 0.01080106CO2 + 50 SiO, + 16HNO, + H,PO, + 0.001FE + 122H,O → (CH,0),06(SiO,)so(NH3),e(H3PO,)Feo.001 + 13802 a. Calculate the change in (total) CO, in the ocean surface mixed (Temp = 25C, Salinity = 35 ppt) layer if 1 nM of iron is added (and consumed), assuming it is indeed the limiting nutrient. %3D b. Would this change in total CO, affect the alkalinity of the surface ocean? Why/why not? c. How much would the pH of the surface change following this primary production (assuming no respiration/gas exchange)? Use pCO2 = 420 ppm and total alkalinity = 2.2 mM to start your calculations. %3D
- A | https://testing.illuminateed.com/assessment/603db30bc92e2ebd078b687b/604826708af909ba078b7b46/1?rldbqn: stry S21 UE8 (B) Al2 + Cu2Cl → Al2CI + Cu2 (C) Al + CuCl2 AlCu + Cl2 (D) Al + 2 CuCl → AlCl2 + 2 Cu Which of the following reactions is best represented by a double arrow ( because it only produces 6. aqueous products? (A) K2CO3 (ag) + 2 HCI (ag) 2 KCI + H2O + CO2 (B) K2CO3 (aq) + 2 NaCl (aq) → 2 KCI + NazCO3 (C) KOH (ag) + HCI (ag) → KCI + H2O (D) 2 KOH (aq) + CuCl2 (aq) → 2 KCI + Cu(OH)2 Which of the following reactants would produce iron (III) hydroxide, Fe(OH)3, as a precipitate in a double replacement reaction? 7. (A) NAOH (aq) + AICI: (aq) ate Education TM, Inc. DELL F2 F3 F4Which of the following are equivalent to 2,500 ppm Cu2+? (There may be more than one answer) MW: Cu (63.55) a) 2.5 ppb Cu2+ b) 2,500,000 ppb Cu c) 2.5 ppt Cu2+ d) 39.34 mM e) 0.03934 M f) 0.07868 N (in precipitation reaction) g) 0.07868 N (in redox into Cu+)You work in a research organization that is looking for markers of various diseases that can be used as a diagnostic for the disease. It has been reported in the past that high levels of Cu are found in the sweat of people with cystic fibrosis. One of the research projects is focused on looking for high levels of Cu in samples that can be obtained non-invasively such as saliva, sweat, hair, nails, etc. The lab will analyze large samples for Cu. What instrument would you recommend purchasing to support this work, Atomic absorption spectrophotometer or an inductively coupled plasma atomic spectrophotometer? Explain the basis for your decision.
- 32x882 2715028=62±3272 Rb K Ba Ca Na Mg AI Mn Zn Cr Co Sn H₂ Cu Ag Hg Reference: Activity Series react with cold water and acids, replacing hydrogen react with acids or steam, but usually not liquid water, to replace hydrogen react with acids, but not water, to replace hydrogen ***reference point*** react with O to form oxides mostly unreactive Increasing ReactivityOWLV2 | Online teaching and X 0mySigTau xb Login | bartleby X M COMM.1113: FUND OF ORA X G what food has c - Google Se X + om/ilrm/takeAssignment/takeCovalentActivity.do?locator=assignment-take D [References] hotogray lenses incorporate small amounts of silver chloride in the glass of the lens. When light hits the AgCl particles, the following reaction occurs: hv AgCl Ag + Cl The silver metal that is formed causes the lenses to darken. The enthalpy change for this reaction is 2.90 × 10² kJ/mol. Assuming all this energy must be supplied by light, what is the maximum vavelength of light that can cause this reaction? Wavelength %3D nm Submit Answer Try Another Version 3 item attempts remaining Previous Next14:33 x 5. ☺ T Add a caption... 4G a) What is the chemical formula for the following compounds: Ammonium Sulfide Nickel (III) Nitrate i) Cobalt (II) Phosphate A > Status (Custom)