Chemistry concepts and calculations

3. The civilization on the planet Ecton is endangered by the continual illegal d

3. The civilization on the planet Ecton is endangered by the continual illegal disposal of Klingon hairspray, which is causing the atmosphere to decompose rst-order rate law. Scie…

3. The complexometric (EDTA) analysis of iron in two ore samples was performed.

3. The complexometric (EDTA) analysis of iron in two ore samples was performed. The ore samples were crushed and digested in 25 mL nitric acid/hydrogen peroxide using microwave he…

3. The complexometric (EDTA) analysis of iron in two ore samples was performed.

3. The complexometric (EDTA) analysis of iron in two ore samples was performed. The ore samples were crushed and digested in 25 mL nitric acid/hydrogen peroxide using microwave he…

3. The complexometric (EDTA) analysis of iron in two ore samples was performed.

3. The complexometric (EDTA) analysis of iron in two ore samples was performed. The ore samples were crushed and digested in 25 mL nitric acid/hydrogen peroxide using microwave he…

3. The complexometric (EDTA) analysis of iron in two ore samples was performed.

3. The complexometric (EDTA) analysis of iron in two ore samples was performed. The ore samples were crushed and digested in 25 mL nitric acid/hydrogen peroxide using microwave he…

3. The concentration of FeNCS 2+ in each of the Standard Solutions at equilibriu

3. The concentration of FeNCS 2+ in each of the Standard Solutions at equilibrium is taken to be the same as the initial concentration of KSCN in the solution. Explain the rationa…

3. The concentrations of copper and lead were determined as an average of the va

3. The concentrations of copper and lead were determined as an average of the values for three systems. The results for these two metals are reported in ppm and ppb. The highest c…

3. The conversion of an alkene in exothermic. The amount of energy released (kno

3. The conversion of an alkene in exothermic. The amount of energy released (known as the heat of hydrogenation) depends on the stability of the double bond undergoing hydrogenati…

3. The conversion of an alkene in exothermic. The amount of energy released (kno

3. The conversion of an alkene in exothermic. The amount of energy released (known as the heat of hydrogenation) depends on the stability of the double bond undergoing hydrogenati…

3. The conversion of an alkene into an alkane via catalytic hydrogenation (with

3. The conversion of an alkene into an alkane via catalytic hydrogenation (with H2 and Pd-C) is always exothermic. The amount of energy released (known as the heat of hydrogenaton…

3. The conversion of an alkene into an alkane via catalytic hydrogenation (with

3. The conversion of an alkene into an alkane via catalytic hydrogenation (with H2 and Pd-C) is always exothermic. The amount of energy released (known as the heat of hydrogenaton…

3. The decomposition reaction of COCh is, COCL()Co)+Cl(g) Kc-22x 1010 The initia

3. The decomposition reaction of COCh is, COCL()Co)+Cl(g) Kc-22x 1010 The initial concentration of CoClz is 0.3166 M. (a) At equilibrium, the concentrations of the products are co…

3. The development and use of new drugs is one of the most important processes i

3. The development and use of new drugs is one of the most important processes in modern healthcare. Complete the sentences below and place them in the correct chronological order…

3. The dissolution of NaCl has a standard enthalpy of +3.87 kJ mol-1 at 25.0ºC a

3. The dissolution of NaCl has a standard enthalpy of +3.87 kJ mol-1 at 25.0ºC and 1bar. Salt water has 35g/kg salt, and the heat capacity of sea water is 3993 J kg1 K1 at 25.0ºC.…

3. The divide and average method, an old-time method for approximating the squar

3. The divide and average method, an old-time method for approximating the square root of any positive number a, can be formulated as x a/x Write a MATLAB m function to implement …

3. The energy needed for the following process is 1.96 x 10 4 kJ/mol: Li( g ) Li

3. The energy needed for the following process is 1.96 x 104 kJ/mol: Li(g) Li3+(g) + 3e- ; I1 + I2 + I3 = 1st, 2nd, 3rd ionization energies. The first ionization energy of lithium…

3. The enthalpy for oxidation of diamond by oxygen to carbon dioxide is -395.4 k

3. The enthalpy for oxidation of diamond by oxygen to carbon dioxide is -395.4 kJ/mol but the enthalpy for oxidation of graphite to carbon dioxide is -393.4 kJ/mol. Find the entha…

3. The enthalpy for oxidation of diamond by oxygen to carbon dioxide is -395.4 k

3. The enthalpy for oxidation of diamond by oxygen to carbon dioxide is -395.4 kJ/mol but the enthalpy for oxidation of graphite to carbon dioxide is -393.4 kJ/mol. Find the entha…

3. The enthalpy for oxidation of diamond by oxygen to carbon dioxide is -395.4 k

3. The enthalpy for oxidation of diamond by oxygen to carbon dioxide is -395.4 kJ/mol but the enthalpy for oxidation of graphite to carbon dioxide is -393.4 kJ/mol. Find the entha…

3. The enthalpy for oxidation of diamond by oxygen to carbon dioxide is -395.4 k

3. The enthalpy for oxidation of diamond by oxygen to carbon dioxide is -395.4 kJ/mol but the enthalpy for oxidation of graphite to carbon dioxide is -393.4 kJ/mol. Find the entha…

3. The enthalpy of solution of an ionic compound can be calculated from its latt

3. The enthalpy of solution of an ionic compound can be calculated from its lattice enthalpy and the enthalpies of hydration of the individual ions. Use the information shown belo…

3. The enzyme -chymotrypsin is secreted in the pancreas of mammals and cleaves p

3. The enzyme -chymotrypsin is secreted in the pancreas of mammals and cleaves peptide bonds between certain pairs of amino acids. The following table of data describes the initia…

3. The first step of the reaction mechanism involves protonation of acetic anhyd

3. The first step of the reaction mechanism involves protonation of acetic anhydride. The protonation step further activates the acetic anhydride towards nucleophilic attack. What…

3. The fol g time-temperature data were col (GMM 8203 g mol was 4.045 J g deg wa

3. The fol g time-temperature data were col (GMM 8203 g mol was 4.045 J g deg was dissolved in 100.00 ml of water The heat copectity of th when 1400 g anhydrous of the res time, m…

3. The following data was obtained at 500 nm in a 1.00 cm cell, for the photomet

3. The following data was obtained at 500 nm in a 1.00 cm cell, for the photometric titration of 10.00 ml of a 3.4 x 105 M Pd(II) solution with 2.44 x 104 MM complexation reagent.…

3. The following diagram illustrates how 1-hydroxypropane can be analyzed to hav

3. The following diagram illustrates how 1-hydroxypropane can be analyzed to have four chemically different (non-equivalent) hydrogen atoms, that is, those that are not related to…

3. The following solvent selection data were collected for an impure sample of s

3. The following solvent selection data were collected for an impure sample of solid compound A (mp 68 °C). Solvent Solubility solubility at BP crystals upon cooling? C Insoluble …

3. The following solvent selection data were collected for an impure sample of s

3. The following solvent selection data were collected for an impure sample of solid compound A (mp solubility at RT solubility at BP crystals upon cooling? Insoluble Solvent Meth…

3. The following table presents a list of different energy reactions in which gl

3. The following table presents a list of different energy reactions in which glucose is the electron donor ("food G" =-2,880 kJ/mol glucose Go -2,720 kJ/rnol glucose source") aer…

3. The fraction F of light that is absorbed by any gas in air is logarithmically

3. The fraction F of light that is absorbed by any gas in air is logarithmically related to the concentration c of the gas and the distance d through which the light travels; this…

3. The gas phase reaction OH(g) + Cll/g) H,O(g) + CH(g) is second order overall

3. The gas phase reaction OH(g) + Cll/g) H,O(g) + CH(g) is second order overall and first order in both reactants. The initial rate of appearance (measured at constant volume and …

3. The heat of vaporization of a compound at 300. K is 27.7 kJ/mol and its vapor

3. The heat of vaporization of a compound at 300. K is 27.7 kJ/mol and its vapor pressure is 540.5 torr. Determine the following thermodynamic properties of the vaporization at 30…

3. The heat of vaporization of a liquid may be obtained from the approximate int

3.   The heat of vaporization of a liquid may be obtained from the approximate intergraded from the Clauius-Clapeyron equation. ?Hv= -R [ln(p2/p2)/(1/T2-1/T1)]= R(T1T2/T2-T1)*ln(p…

3. The heat of vaporization of a liquid may be obtained from the approximate int

3.   The heat of vaporization of a liquid may be obtained from the approximate intergraded from the Clauius-Clapeyron equation. ?Hv= -R [ln(p2/p2)/(1/T2-1/T1)]= R(T1T2/T2-T1)*ln(p…

3. The mass in atomic mass units of one formula unit of an ionic compound. 4. Th

3.    The mass in atomic mass units of one formula unit of an ionic compound. 4.    The study of relationships between measurable quantities, such as mass and volume, and the numb…

3. The mean monthly pH values of rainfall in Guiyang city in Guizhou province in

3. The mean monthly pH values of rainfall in Guiyang city in Guizhou province in southern China in 1984 were as follows: Jan 3.9, 4.0, 3.8, 4.1, 4.0, 4.5, 4.5, 4.1, 3.7, 3.8, 3.7,…

3. The method of linear least squares is frequently used to fit a straight line

3. The method of linear least squares is frequently used to fit a straight line to a set of data, and is employed as part of a calibration curve analysis. Do all parts below. A. C…

3. The nutritional label of a package of cookies lists the serving size as 1 coo

3. The nutritional label of a package of cookies lists the serving size as 1 cookie that weighs 28.4 g. The total fat per serving size is listed as 7 g with 1.7 g of saturated fat…

3. The outside temperature can be estimated based on how fast crickets chirp. At

3. The outside temperature can be estimated based on how fast crickets chirp. At 104 chirps per minute, the temperature is 63°F At 176 chirps per minute, the temperature is 81°F. …

3. The pH of a solution at 25°C in which [OH – ] = 3.3 ´ 10 –5 M is: a) 4.48 b)

3. The pH of a solution at 25°C in which [OH–] = 3.3 ´ 10–5M is: a)      4.48 b)     3.30 c)      9.52 d)     4.76 e)      none of these 5. A monoprotic weak acid when dissolved i…

3. The phenomenon of autocatalysis is the catalysis of a reaction by the product

3. The phenomenon of autocatalysis is the catalysis of a reaction by the products. For example, in a reaction A --> P it may be found that the rate law is v=k[A][P] and so the …

3. The potassium dichromate reaction was long used as the basis for breath-alcoh

3. The potassium dichromate reaction was long used as the basis for breath-alcohol testing 2K2Cr207 + 3CHcCH2OH + 8H2SO4 2Cr2(S04)3 + 2K2S04 + 3CH3COOH a. (2 pts) What type of rea…

3. The protease papain (isolated from papaya fruit) is a monomer with 1 active s

3. The protease papain (isolated from papaya fruit) is a monomer with 1 active site per protein molecule. The enzyme was assayed at a series of substrate concentrations and intial…

3. The purification of nickel from nickel ore is relatively simple chemically (s

3. The purification of nickel from nickel ore is relatively simple chemically (stoichiometry) a) Nickel oxide is reacted with hydrogen to produce impure nickel metal. 600 g of nic…

3. The qualitative analysis scheme in this exercise involved adding reagents to

3. The qualitative analysis scheme in this exercise involved adding reagents to confirm the presence of cations, specifically, Ba2+, Pb2+, and Fe3+. Could this or a similar proced…

3. The reaction 2NO,-, 2NO + O, obeys the nto law 02 -(140 × 10.2 sec)(NC), l\'a

3. The reaction 2NO,-, 2NO + O, obeys the nto law 02 -(140 × 10.2 sec)(NC), l'a 506 K. Ir the initial concentration of NO, is 1.00 M how long wi a r e 28.2% of its initial value? …

3. The reciprocal of the exponential function can be approximated using the foll

3. The reciprocal of the exponential function can be approximated using the following approach e^ - x = ... Write a MATLAB code that uses this approach to evaluate e^ - 5. Compare…

3. The salt Ba(CIO), is dissolved in water. a. Is the resulting solution acidic,

3. The salt Ba(CIO), is dissolved in water. a. Is the resulting solution acidic, basic, or neutral? b. Does either ion, Ba* or ClO, , hydrolyze in water? Why or why not? 4. The sa…

3. The same study reported that the following reaction also tends to go forward:

3. The same study reported that the following reaction also tends to go forward: AsH3 HS Which is the stronger acid, H2S or AsH3? Is this in agreement with the general trends for …

3. The sensitivity of a spectrophotometer allows detection of I indicator (for e

3. The sensitivity of a spectrophotometer allows detection of I indicator (for example HIn) in the presence of 99 percent of the other colored form (In). Based on this fact, over …