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- H20 -OH H30* (1) XS LIAIH4 (2) H2O HO, он (1) XS CH;MgBr (2) H20(d) 3-13. Distis me Jum 4 A method of analysis yields weights for gold that are low by 0.4 mg. Calculate the caused by this uncertainty if the weight of gold in the sample is (a) 900 mg. (c) 150 mg. 1-7. The method described in Problem 3-6 is to be used for the analysis of ores that assay about 1.2% gold. What minimum sample weight should be taken if the relative error resulting from a 0.4-mg loss is not to exceed -0.2%? percent relative error (a) (b) (b) 600 mg. (d) 30 mg. 3-14. Wha stan stam 3-15. Сог mea (b) -0.5%? (a) -0.8%? (c) (d) 1.2%? 3.5 3-8. The color change of a chemical indicator requires an overtitration of 0.04 mL. Calculate the percent relative error if the total volume of titrant is (a) 50.00 mL. (c) 25.0 mL. 3-9. A loss of 0.4 mg of Zn occurs in the course of an analysis to determine that element. Calculate the per- cent relative error due to this loss if the weight of Zn in the sample is (a) 40 mg. (c) 400 mg. 3.1 3.1 (b) 10.0 mL. 3.3 2.5 (d) 40.0 mL. Fo (a (E (b) 175…10) PCC H,CrO4 ? ?
- !קרט Mn02+4A1 3Mn +2Al.03 and Meducing agent fhom the woud juabe Bunnpa4Calculate e° values for the galvanic cells based on the following overall reactions. Assume that all concentrations are 1.0 M and that all partial pressures are 1.0 atm.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 F4