Chemistry concepts and calculations

7. Based on what you know about the stoichiometry of ionic compounds, predict th

7. Based on what you know about the stoichiometry of ionic compounds, predict the chemical formula of calcium hydroxide. 8. What information will you obtain in this experiment tha…

7. Be sure to answer all parts.A gas expands in volume from 31.7 mL to 70.3 mL a

7. Be sure to answer all parts.A gas expands in volume from 31.7 mL to 70.3 mL at constant temperature. Calculate the work done (in joules) if the gas expands against a constant p…

7. Becalus use the sample to orUR n: (2 pont dizod comgo unds aund Carbon pastic

7. Becalus use the sample to orUR n: (2 pont dizod comgo unds aund Carbon pasticles we are adding activated charcoal to the boiling solution of adipic acid before filtration. Give…

7. Becalus use the sample to orUR n: (2 pont dizod comgo unds aund Carbon pastic

7. Becalus use the sample to orUR n: (2 pont dizod comgo unds aund Carbon pasticles we are adding activated charcoal to the boiling solution of adipic acid before filtration. Give…

7. Below is a calibration curve prepared for the spectrophotometric determinatio

7. Below is a calibration curve prepared for the spectrophotometric determination of Fell) in soil. A regression analysis of the curve produced a slope of 0.0792, a correlation co…

7. Bonus: The fraction extracted into solvent B is calculated by formula below t

7. Bonus: The fraction extracted into solvent B is calculated by formula below the shown : fraction extracted into B - ( NY 1 + VB Van K where K is the distribution coefficient VA…

7. Calculate each of the following quantities: moles of Compound in 15.8 g of Fe

7. Calculate each of the following quantities: moles of Compound in 15.8 g of Fet(CIO) A. 97 mol B. 0.0446 mol C. 1.74 x 104 mol D. 0.9507 mol 8. Potassium nitrate decomposes on h…

7. Calculate the pH of the titration solution after the addition of 49.00 mL of

7. Calculate the pH of the titration solution after the addition of 49.00 mL of 0. 1000 M HCI to 100.0 mL of 0.05000 M solution of NaOH. (A) 10.83 (B) 7.00 (C) 2.70 (D) 1.00 (E) 1…

7. Catalysts80 A proposed mechanism for the oxidation of SO 2 toSO 3 follows: NO

7. Catalysts80 A proposed mechanism for the oxidation of SO2 toSO3 follows: NO2(g) + SO2(g) ---> NO(g) +SO3(g) 2 NO(g) + O2(g) ---> 2 NO2(g) Is this an example ofhomogeneous…

7. Choose the best answer below. Which of the following statements is FALSE conc

7. Choose the best answer below. Which of the following statements is FALSE concerning a deep-sea diver that is coming up from a depth where the total pressure is 3 atm to the sur…

7. Classify as true or false-for a. For an insoluble salt, Ksp is always less th

7. Classify as true or false-for a. For an insoluble salt, Ksp is always less than 1 b. More PbClz can be dissolved at 100 °c than at 25C. statements rthe false statements, correc…

7. Complete the following sentences. Glycoproteins are proteins containing coval

7. Complete the following sentences. Glycoproteins are proteins containing covalently bound The oligosaccharide chains of most glycoproteins are either O-linked to- or residues or…

7. Complete the following tasks: a. Design a class named Pizza . Data fields inc

7. Complete the following tasks: a. Design a class named Pizza . Data fields include a string field for a topping(such as pepperoni) and numeric fields for diameter in inches (suc…

7. Concerning the following reaction at equilibrium: 3Fe(s) + 4H20(g) Fejo.(s) +

7. Concerning the following reaction at equilibrium: 3Fe(s) + 4H20(g) Fejo.(s) + 4H2(g) increasing the volume of the container would: (A) Shift the equilibrium to the right (B) Sh…

7. Consider a constant-volume battery that can operate reversibly. For this syst

7. Consider a constant-volume battery that can operate reversibly. For this system, the work can be expressed (in derivative form) as where is voltage and Q is charge. Which expre…

7. Consider a voltaic cell in which the following reaction takes place 2NO3- (aq

7. Consider a voltaic cell in which the following reaction takes place 2NO3- (aq) + 3H2 (g) 2NO (g) + 2OH-(aq) + 2H2O a) Calculate E0 b) Calculate E under the following conditions…

7. Consider the equilibrium in a saturated solution of barium fluoride. BaF2 (s)

7. Consider the equilibrium in a saturated solution of barium fluoride. BaF2 (s) Ba2 (aq) 2 F (aq) Kp= 1.7×10-6 at 25°C a) Is BaF2 an acidic or basic salt? b) When H" is added, it…

7. Consider the following equilibrium: H 2 O (g) + CO (g) H 2(g) + CO 2(g) At hi

7.         Consider the following equilibrium: H2O(g)  +  CO(g)   H2(g)  +  CO2(g) At high temperature, H2O and CO are placed in a closed container. As the system approaches equil…

7. Consider the following processes (treat all gases as ideal). 1) The pressure

7. Consider the following processes (treat all gases as ideal). 1) The pressure of 1 mole of oxygen gas is allowed to double isothermally. 2) Carbon dioxide is allowed to expand i…

7. Consider the following specific heats of metals Metal copper 0.385 Jg.\"C chr

7. Consider the following specific heats of metals Metal copper 0.385 Jg."C chromium 0.447 JICg "C) silver Metal cobalt 0418 JIg "C) gold 0.129 Jig-C) 0.237 Jig . "C) 100-g sample…

7. Consider the following two improving the separation. In (a) the original chro

7. Consider the following two improving the separation. In (a) the original chromatogram shows overlapping peaks. In (b) there is an increase in band separation, and in (c) there …

7. Consider the phase diagram for hydrogen 13.0 solid liquid 1.0 E 0.07 gas -259

7. Consider the phase diagram for hydrogen 13.0 solid liquid 1.0 E 0.07 gas -259 -253 -240 Temnerature. °C (not to scale) (a) Give the normal boiling point of hydrogen. Answer: (b…

7. Consider the phase diagram for nitrogen: (8) 33.6 liquid solid 1.0 E 0.12 gas

7. Consider the phase diagram for nitrogen: (8) 33.6 liquid solid 1.0 E 0.12 gas 210 196 147 Temoerature. C (not to scale) -106.0 a. What is the normal boiling point of nitrogen? …

7. Consider zinc hydroxide, Zn(OH)2, where Ksp = 3 x 10^-17. A. Determine the so

7. Consider zinc hydroxide, Zn(OH)2, where Ksp = 3 x 10^-17. A. Determine the solubility of zinc hydroxide in pure water. B. How does the solubility of zinc hydroxide in pure wate…

7. Define buffer by a. composition b. properties. What are the expected pHs of t

7. Define buffer by a. composition b. properties. What are the expected pHs of the following solution of bicarbonate buffer? c. 0.45 M carbonic acid (H2CO3) with 0.45 M sodium bic…

7. Define buffer by a. composition b. properties. What are the expected pHs of t

7. Define buffer by a. composition b. properties. What are the expected pHs of the following solution of bicarbonate buffer? c. 0.45 M carbonic acid (H2CO3) with 0.45 M sodium bic…

7. Draw the elution /fractionation profile of all the homogenate proteins separa

7. Draw the elution /fractionation profile of all the homogenate proteins separated using cation exchange chromatography. List the proteins in order of their elution. Why are thes…

7. Draw the elution /fractionation profile of all the homogenate proteins separa

7. Draw the elution /fractionation profile of all the homogenate proteins separated using cation exchange chromatography. List the proteins in order of their elution. Why are thes…

7. Element x has the valance electron with the following quantum numbers (ns3, l

7. Element x has the valance electron with the following quantum numbers (ns3, la2, ma-2, m, +1/2). What is element X? a. Calcium b. Gallium c. Aluminum d. Scandium 8. Which of th…

7. Fill in the words or phrases that best complete the sentence. is the sum of a

7. Fill in the words or phrases that best complete the sentence. is the sum of all of the chemical reactions in the body, whilerefers to chemical reactions that decompose large mo…

7. Find o, p-deactivating substituent in EAS reaction. 8. Rank the following com

7. Find o, p-deactivating substituent in EAS reaction. 8. Rank the following compounds in the order of reactivity for electrophilic aromatic substitution (EAS) reaction, starting …

7. Fiure 1 represents titration ourves for solutions of four acids titrsted with

7. Fiure 1 represents titration ourves for solutions of four acids titrsted with the same standard base solution. Based on these tinration curves, we can accurasely predict that (…

7. For Diels-Alder cycloaddition reactions to take place most rapidly and in hig

7. For Diels-Alder cycloaddition reactions to take place most rapidly and in highest yield the diene must: A. be able to adopt an S-trans conformation B. be substituted with elect…

7. For Diels-Alder cycloaddition reactions to take place most rapidly and in hig

7. For Diels-Alder cycloaddition reactions to take place most rapidly and in highest yield the diene must: A. be able to adopt an S-trans conformation B. be substituted with elect…

7. For each equation, replace the ? with the correct isotopic or particle symbol

7. For each equation, replace the ? with the correct isotopic or particle symbol, 1 number and atomic number/number of protons. (10 points) including mass 89 b. en c. 239 204 13 d…

7. For each of the following situations, determine whether or not a precipitate

7. For each of the following situations, determine whether or not a precipitate of MgF2 is expected to form. a) 500.0 mL of 0.050M Mg(NO3)2 is mixed with 500.0 mL of 0.010 M NaF. …

7. For each of the following weak acid:conjugate base pairs, assume a buffer mix

7. For each of the following weak acid:conjugate base pairs, assume a buffer mixture is prepared and it is reacted with either a strong acid or a strong base. Write: Reaction a. A…

7. For which of the following species are the dispersion forces strongest? A. C4

7. For which of the following species are the dispersion forces strongest? A. C4Hio CoH14 Which of the following can form hydrogen bonds with water molecules? 8. I. Na II. CH3COOH…

7. Give the cellular localizationls) for each of the following be organelle, e-

7. Give the cellular localizationls) for each of the following be organelle, e- is within an organelle, give the precise location w e precise location within the organelle, e.g. m…

7. Given the following mechanism, what is the rate law for the overall reaction?

7. Given the following mechanism, what is the rate law for the overall reaction? slow fast overall A+2A Rate - 8. If the above mechanism is rewritten as follows, what is the rate …

7. Given the following sxperimental data for temperature and Pap for an unknown

7. Given the following sxperimental data for temperature and Pap for an unknown liquid: Trial Pap (mmHg) TOC) 2.05 115.02 645.25 779.65 1010.01 225.25 247.95 300.0 318.14 345.85 -…

7. Given the phase diagram of a hypothetical substance, answer the following que

7. Given the phase diagram of a hypothetical substance, answer the following questions: (a) Indicate the phases at points X, Y, Z, A and B (b) As you move from E to C, what phase …

7. HA and HB are both weak acids in water, and HA is a stronger acid than HB. Wh

7. HA and HB are both weak acids in water, and HA is a stronger acid than HB. Which of the following statements is correct'? A. A is a stronger base than B, which is a stronger ba…

7. How many grams of sodium carbonate will react with25.5 ml of 0.300 M hydrochl

7. How many grams of sodium carbonate will react with25.5 ml of 0.300 M hydrochloric acid? Na2CO3 + HCl > NaCl + H20 + CO2 (unbalanced) a. Determine the number of moles (mmoles…

7. How many liters of chlorine gas (70.91 g/mol) at 25°C and 0.950 atm can be pr

7. How many liters of chlorine gas (70.91 g/mol) at 25°C and 0.950 atm can be produced by the reaction of 12.0 g of MnO2 (86.94 g/mol) with excess HCI(aq) according to the followi…

7. How would you prepare 0.100 L of a 0.020 M solution of acetate ion using sodi

7. How would you prepare 0.100 L of a 0.020 M solution of acetate ion using sodium acetate? Using magnesium acetate? 8. The concentration of ampicillin in a stock solution is 5.00…

7. Hydrogen gas reduces NO to N2 in the following reaction: H2 (g) 2 NO (g) 2 H2

7. Hydrogen gas reduces NO to N2 in the following reaction: H2 (g) 2 NO (g) 2 H20 (g) N2 (g) The initial reaction rates of four mixtures of H, and NO were measured at 900 oC with …

7. Identify the starting reagents needed to make the following compound by a mix

7. Identify the starting reagents needed to make the following compound by a mixed aldol condensation. A) benzaldehvde (C6H5CH=O) and 3-pentanone B) benzaldehyde (C6H5CH=O) and 2-…

7. If 1.0 mL of 0.002 M Fe3 (aq), 1.0 mL 0.002 M scN (aq) and 8.0 mL of H20 are

7. If 1.0 mL of 0.002 M Fe3 (aq), 1.0 mL 0.002 M scN (aq) and 8.0 mL of H20 are mixed together as the initial solution, what will be the initial concentration of SCN (aq)? 8. Acco…

7. If 50.0 g of three gases, Ar, SO2 and H2, are placed separately into three id

7. If 50.0 g of three gases, Ar, SO2 and H2, are placed separately into three identical containers, which container will have the lowest pressure? Temperature and volume of all th…