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- Calculate 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.ECT NOTEBOOK AND 290) NISYNISOL Aktiv Chemistry - Numeric Entry x → C + tab 01 esc app.aktiv.com A chemist has a block of gold metal (density is 19.3 g/mL). The block weighs 3.10 g. What is the volume of the gold block in ml? H 9 a Content/24SSEM BIO_112_0 x | + 2 W #m Sin Question 19 of 36 5 10 8 1 4 7 +/- 2 LO 5 8 | mL 3 6 9 0 ☆Next F Contents Notes N Grades Chemistry: Q4: 2022-23 | Balan 8 4 7 1 +2He+ 5.3Li + 1H → 2He+ 3 On O on 4 O2He O 4 4Be O oi Ⓡ 1H
- Each of these reactant pairs may or may not react. If the reaction will happen, write the complete balanced chemical equation. If it won't happen, state the reason why not. a. Pb(s) + Al2(CO3)3 > b. Na + K→ B I u、ケ=▼ 三v = of Paragraph + v ... Lato (Recom.. 19px EQ 12 Add a File Record Audio Record VideoM (2022-23) Unit 1: Mole Concept, Unit 4 (FR) (Version 2) Assessment: Chemical Reactions 0.90 0.80- 0.70- 3 0.60 0.50- 0.40- 0.30- Absorbance 2. To spectrophotometrically determine the mass percent of cobalt in an ore containing cobalt and some inert materials, solutions with known [Co²+] are prepared and the absorbance of each of the solutions is measured at the wavelength of optimum absorbance. The data are used to create a calibration plot, shown below. 0.20 0.10- 0.00+ ㅏ 0.005 0.010 34 0.015 Concentration (M) .04 co₂ 100- pertoc A 0.630 g sample of the ore is completely dissolved in concentrated HNO3(aq). The mixture is diluted with water to a final volume of 50.00 mL. Assume that all the cobalt in the ore sample is converted to Co²+ (aq). (a) What is the [Co²+] in the solution if the absorbance of a sample of the solution is 0.74 ? (b) Calculate the number of moles of Co²+ (aq) in the 50.00 mL solution. (c) Calculate the mass percent of Co in the 0.630 g sample of the ore. Answer…(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…
- OneLogin ALEKS - Kayley Valentine b nickel (II) sulfate cation and ani x Lea x + A www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IBI5ahvJxLWwcNXdqGDInlqlcnbb-P21X0OTA0ITA3YJ_7HPrxSXe3aRFsU.. Apps O R Prechecks: Test 2... O ATOMS, IONS AND MOLECULES Deducing the ions in a polyatomic ionic compound from its empir... Complete the table below by writing the symbols for the cation and anion that make up each ionic compound. The first row has been completed for you. ionic compound cation anion NaCl CI Na NiSO, V Cl, Cro, Fe (OH), Explanation Check O 2020 McGraw-Hill Education. All Rights Reserved. Terms of Use l Pr MaćBook Pro esc 888 F4 F1 F5 F6 F7 F8 F9 F10 F11 F12 24 & Q т H. alt olt tion command command optic * 00Help 100% 2 Tue 4: Public Health Ch x * HSC 258 - Major Projec X * Mind Tap - Cengage Lea X C The Illustration To The d=55750828934189288909969212&EISBN=9781305657571&id=1061392007&nbld%3D21... * O TO Q Search this co References Use the References to access important values if needed for this question. For the following reaction, 6.43 grams of sulfur dioxide are mixed with excess oxygen gas . The reaction yields 6.30 grams of sulfur trioxide . sulfur dioxide(g) + oxygen(g) sulfur trioxide(g) grams What is the ideal yield of sulfur trioxide? What is the percent yield for this reaction? Submit AnswerC. Cr(C104)3 Show Hint
- Document1 - Word Search (Alt+Q) References Mailings Review View Help Write the corresponding letters to the following descriptions. Each proposal can be associated with 0 or 1 match and each letter is not necessarily associated with a proposal. a. [Ar] 4s? b. 1s 2s2p63s23p3 c. 1s2s2p2 d. [Ne] 3s23ps e. [Ar] 4s23d10 f. 1s22s! g. None of those answers 1. I am a halogen 2. I am a transition metal 3. I am alkaline 4. I have exactly 2 single electrons 5. I am the smallest of the atoms presented here 6. I have exactly 3 valence electrons 7.I am the most paramagnetic of the atoms presented here 8. I am the copper 9.I am isoelectronic with Ti2+ IF cessibility: Good to go IA 16 SIS(129) ALEKS: Calculating x + X www-awu.aleks.com/alekscgi/x/isl.exe/10_u-IgNsikr7j8P3JH-IvTqeviKFP6W0cqJcWJdIACROQwyw24GWHInCwZsOvg6oljUPZmqCsVfxIjXe3ye87. ☆ 17.4 Solubility and...18.3 Gibbs Free E.. 5.3 Enthalples of... 18.5 Gibbs Free E... Reading Schedule 19.6 Reduction Po... Y SOLUTION: The le Math 115 W-S Fall... A ALEKS-Lara Althawadi X C calculating the solubility of an X esc E O KINETICS AND EQUILIBRIUM Calculating the solubility of an ionic compound when a commo... sp Calculate the solubility at 25 °C of CuBr in pure water and in a 0.0150M CoBr₂ solution. You'll find K, data in the ALEKS Data tab. Round both of your answers to 2 significant digits. 0- solubility in pure water: solubility in 0.0150 M CoBry solution: Explanation 30 Methods for Measuring the pH of an Aqueous Slide 28 of 104 Notes Q A Z Check 2 Comments 9 == W Click to add notes S 3 C с E D 4 C R P -111+ 00 0° F 0.9 0x0 5 G Search or type URL X T 63% X EX G 6 B Y 3 010 7 H ☆ Ⓒ2022 McGraw Hill LLC. All Rights…Hydrogen H2{"version":"1.1","math":"<math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">H</mi><mn>2</mn></msub></math>"} is ___________________________ in water. Question options: insoluble soluble and a nonelectrolyte soluble and an electrolyte