Chemistry concepts and calculations

5 g ce of num (which has a mol heat capacity of0.89 Jl C g healed to 82.4 Cand d

5 g ce of num (which has a mol heat capacity of0.89 Jl C g healed to 82.4 Cand dropped into a calo eler contai g wal ater in the calorimet A 212 g D 5.72 kg C 5.42 g o D 168 kg no…

5 of 15 Sapling Learning N-Tosylamido-L irreversibly inhibits chymotrypsin, and

5 of 15 Sapling Learning N-Tosylamido-L irreversibly inhibits chymotrypsin, and is used as to label the active site histidine residue. The COCH2CI group is the reactive group that…

5 parts to this one question. Part 1) For the balanced reaction CH 4 (g) + 2 O 2

5 parts to this one question. Part 1) For the balanced reaction CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g), how many molecules of CH4 are required to make 2 molecules of H2O? Part 2) For …

5 please 3) its volum e 0)38 3.\'s L at a pressure 729 tort. B) 556 D) 72.9 E) 2

5 please 3) its volum e 0)38 3.'s L at a pressure 729 tort. B) 556 D) 72.9 E) 273 4) If 3.21 mol of a gas occupies 562 L at 44 and 793 tetess L under these same conditions ml of t…

5 pt (8c27p73) A controler on a electronic arcade game con- sists of a variable

5 pt (8c27p73) A controler on a electronic arcade game con- sists of a variable resistor connected across the plates of a 0.310 F capacitor. The capacitor is charged to 5.40 V, th…

5 pt motorn (c28p38) When the lights of an automobile are switched on, an ammete

5 pt motorn (c28p38) When the lights of an automobile are switched on, an ammeter in series with them reads 9.9 A and a voltmeter connected across them reads 11.80 V. See the figu…

5 star rating will be given to the most detailed answers using key vocabulary wo

5 star rating will be given to the most detailed answers using key vocabulary words. Name four factors that are under the control of a scientist when he or she wants to increase t…

5 the peroxydisulfate ion (s2o8-2 )reacts with the iodid ion in aqueous solution

5 the peroxydisulfate ion (s2o8-2 )reacts with the iodid ion in aqueous solution via the reaction; s2o8-2(aq) +3I-  = 2SO4 (aq) +I3-(aq) an aqueous solution contaning 0.050M ion a…

5 – 7. Answer each of the questions in order to answer the final question. Given

5 – 7. Answer each of the questions in order to answer the final question. Given the following balanced chemical equation and the information about each of the reactants, calculat…

5(10pts)A simple model of a metal consists of electrons moving in a one dimensio

5(10pts)A simple model of a metal consists of electrons moving in a one dimensional lattice with narrow deep potential wells at each atom. The resulting allowed electron energies …

5) (5 points) What was the percent yield for this reaction? 6) (5 points) Assumi

5) (5 points) What was the percent yield for this reaction? 6) (5 points) Assuming a 100 % conversion to product, how many moles of propanoic acid would be collected during the di…

5) (6 pts) Fill in the blanks (e.g.: larger, smaller, the same, or whatever the

5) (6 pts) Fill in the blanks (e.g.: larger, smaller, the same, or whatever the answers requires) a) The atomic diameter of He is (larger, smaller, the same) _____________ than th…

5) A NASA scientist proposed that barium peroxide be used on aspace capsile to s

5) A NASA scientist proposed that barium peroxide be used on aspace capsile to supply emergency oxgen since it decomposes tobarium oxide and oxygen. what mass of barium peroxide w…

5) A neutralization reaction between KOH (ag) and H2S04 (aq) would give which tw

5) A neutralization reaction between KOH (ag) and H2S04 (aq) would give which two products? A) H20 () and H2S (g) B) H20 (1) and KSO4 (aq) C) H20 () and K2504 (aq) D) SO2 (g) and …

5) A sample of a gas (5.0 mol) at 1.0 atm is expanded at constant temperature fr

5) A sample of a gas (5.0 mol) at 1.0 atm is expanded at constant temperature from 10 L to 15 L. The 5) final pressure is atm. A) 15 B) 7.5 C) 3.3 D) 0.67 E) 1.5 6) If 50.75 g of …

5) A sample of helium gas at 27.0 °C and 3.60 atm pressure is cooled in the same

5) A sample of helium gas at 27.0 °C and 3.60 atm pressure is cooled in the same container to a temperature of -73.0 °C. What is the new pressure? 6) A SAMPLE OF METHANE GAS HAS A…

5) A sample of iron absorbs 81.0 J of heat, upon which the temperature of the sa

5) A sample of iron absorbs 81.0 J of heat, upon which the temperature of the sample increases from 17.9 °C to 32.5 °C. If the specific heat capacity of iron is 0.450 J/gK, what i…

5) A sample of liquid butan-1-ol, CH,OH was brought to the boil in an open calor

5) A sample of liquid butan-1-ol, CH,OH was brought to the boil in an open calorimeter. An electric current of 289 mA from a 12.0 V source was then passed through a resistive heat…

5) Adding ammonia to a solution containing copper ions... - reduces the copper t

5) Adding ammonia to a solution containing copper ions... - reduces the copper to copper metal - causes formation of a complex ion with copper - removes the copper from the soluti…

5) Calculate Gnn for the reaction at 25 °C, (2 pts) 2Fe3+(aq) + 3Sn(s) 2Fe(s) +

5) Calculate Gnn for the reaction at 25 °C, (2 pts) 2Fe3+(aq) + 3Sn(s) 2Fe(s) + 3Sn2+(aq) 6) A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 °C. The i…

5) Calculate [H*] for each of the following solutions, and indicate whether the

5) Calculate [H*] for each of the following solutions, and indicate whether the solution is acidic, basic, or neutral. (a) [OH] 0.00054 M (b) a solution in which [OH] is 100 times…

5) Calculate the pH of each of the following solutions: (a) 0.0010 MHC (b) 0.76

5) Calculate the pH of each of the following solutions: (a) 0.0010 MHC (b) 0.76 MKOH: (c) 0.0187 M CHCOOH, (K. for CHC00H-1.8 × 10-5); (d) 0.040 M H2SO. (Hint: H2SO. is a strong a…

5) Chromium has an atomic radius of 1.25 x 10*cm and crystallizes in a body cent

5) Chromium has an atomic radius of 1.25 x 10*cm and crystallizes in a body centered cube S? What is the density of chromium in g/cm? 6)A solution is made by dissolving 23 grams o…

5) Complete the following reaction. 5) Compound below was synthesized using a Wi

5) Complete the following reaction. 5) Compound below was synthesized using a Williamson ether synthesis; provide a stepwise mechanism which accounts for its formation. Show elect…

5) Consider the phase diagram for carbon dioxide(10) 30-. Solid Liquid Gas -785

5) Consider the phase diagram for carbon dioxide(10) 30-. Solid Liquid Gas -785 -56.4 31.1 Temperature a) what is the critical temperature for carbon dioxide? b) What is the criti…

5) Consider the reaction forming the complex ion Cu(CN)42-(aq) Cu2+(aq) + 4 CN-(

5) Consider the reaction forming the complex ion Cu(CN)42-(aq) Cu2+(aq) + 4 CN-(aq) Cu(CN)42-(aq) Kf = 1.0 x 1025 (at T = 25. C) A system initially contains 0.100 M Cu2+ ion and 0…

5) Each of the following sets of quantum numbers is supposed to specify an orbit

5) Each of the following sets of quantum numbers is supposed to specify an orbital. Choose the one set of quantum numbers that does not contain an error. A) n- 2, 2, ml -+1 C) n 3…

5) For Trials 2 & 3, the molar mass of the solute was 151 g/mol & 143 g/mol resp

5) For Trials 2 & 3, the molar mass of the solute was 151 g/mol & 143 g/mol respectivctively. A) What is the average molar mass of the solute? B) What are the standard dev…

5) How many grams of NaOH are needed to make 750 mL of a 2.5% (w/v) solution? A)

5) How many grams of NaOH are needed to make 750 mL of a 2.5% (w/v) solution? A) 3.9 g B) 7.5 g C) 19 g D) 20 g E) 50 g 6) Which solution is the least concentrated? Each choice re…

5) If a nucleus gains a neutron and then undergoes beta emission, a. its atomic

5) If a nucleus gains a neutron and then undergoes beta emission, a. its atomic number decreases by one and its mass number increases by one. b. its atomic number is unchanged and…

5) In a different titration (not the one above), 1.328 g of an unknown monoproti

5) In a different titration (not the one above), 1.328 g of an unknown monoprotic acid required 19.84 mL of 0.106 M sodium hydroxide to reach the equivalence point. What is the mo…

5) In concentrated sulfuric acid, ethanol (CH 3 CH 2 OH) forms diethyl ether (CH

5)   In concentrated sulfuric acid, ethanol (CH3CH2OH) forms diethyl ether (CH3CH2OCH2CH3) and water according to the reaction 2 CH3CH2OH ? CH3CH2OCH2CH3 + H2O In a side reaction,…

5) Methanol and ethanol are both oxidized by alcohol dehydrogenase (ADH). Methan

5) Methanol and ethanol are both oxidized by alcohol dehydrogenase (ADH). Methanol is poisonous because it oxidized by ADH to form the highly toxic compound formaldehyde. The adul…

5) P4 (s) + 10 Cl2(g) 4 PCl5 (s)H = - 435.2kcal Based on the reaction shown, whi

5) P4 (s) + 10 Cl2(g) 4 PCl5 (s)H = -435.2kcal Based on the reaction shown, which statement is true? A) When 30.97 g P4 (s) react, 435.2 kcal are released. B) When 1 mol P4 (s) re…

5) The binding of oxygen to hemoglobin (abbreviated Hb), giving oxyhemoglobin, (

5) The binding of oxygen to hemoglobin (abbreviated Hb), giving oxyhemoglobin, (HbO2) is partially regulated by the concentration of H+ and CO2 in the blood. Although the equilibr…

5) The central atom in_ violates the octet rule. 6) Using the table of bond diss

5) The central atom in_ violates the octet rule. 6) Using the table of bond dissociation energies, the delta H for the following reaction is_ kJ. 7) How many equivalent resonance …

5) The condensed structural formula for the molecule shown is? https://ecourses.

5) The condensed structural formula for the molecule shown is? https://ecourses.tvcc.edu/courses/1/CHEM1412_S14_0203/ppg/d6/brg0001f391afb01b039/q20-1.png 1) (CH3)2CH(CH2)2CH3 2) …

5) The distance that light travels in one year is called a light year. Given tha

5) The distance that light travels in one year is called a light year. Given that light travels at a speed of 3 * 108 meters in one second. Determine and write an algorithm to cal…

5) The heating curve of H2O is shown in the figure below. Use the information pr

5) The heating curve of H2O is shown in the figure below. Use the information provided to answer the following questions. Cp mater 75.3 J/mol.C CR vapor-33.6 J/mol."C As 6.01 kJ/m…

5) The kinetic-molecular theory predicts that pressure rises as the temperature

5) The kinetic-molecular theory predicts that pressure rises as the temperature of a gas increases because A) the average kinetic energy of the gas molecules decreases B) the aver…

5) There is a superfund site (a former dumping ground for toxic chemicals) off o

5) There is a superfund site (a former dumping ground for toxic chemicals) off of Douglas road near Grape road in Mishawaka. The report by the EPA is on the following page. Read t…

5) Treatment of a nitrile with a large amount of Grignan reagent followed by aci

5) Treatment of a nitrile with a large amount of Grignan reagent followed by acid hydrolysis results in A) an ester B) a ketone C) an aldehyde D) an ether E) an aloohol 9) Identif…

5) Uranium dating is used to calibrate 14C age estimates in corals based on the

5) Uranium dating is used to calibrate 14C age estimates in corals based on the decay of 234U to 230Th (think of this as a first order reaction where U is the reactant and Th is t…

5) Using the following data 4) 35.0 ml a Cu 2 volumetric solution of unknown con

5) Using the following data 4) 35.0 ml a Cu 2 volumetric solution of unknown concentration was diluted in a 100.0 ml to flask. The resulting so was analyzed by spectroscopy, and i…

5) Using the results from your titration curve of the unknown acid and by referr

5) Using the results from your titration curve of the unknown acid and by referring to Table 5.4, identify your samples identity Sample number: Identity of unknown sample: Table 5…

5) Which method would work best in carrying out the following conversion? a) HBr

5) Which method would work best in carrying out the following conversion? a) HBr, then NaNH2 c) Br/H20, then NaNH2 b) Br2, then NaNH2 6) What is the major product of the reaction …

5) Which of following statements are consistent with the Kinetic Molecular Theor

5) Which of following statements are consistent with the Kinetic Molecular Theory? A) Gases are compressible because the volume taken up by the gas is almost entirely open space. …

5) Which of the following correctly describes intermediates and transition state

5) Which of the following correctly describes intermediates and transition states? Answer(s): _________ a. An intermediate is always higher in energy than the substrate from which…

5) Which of the following elements is found as a monatomic species in its most s

5) Which of the following elements is found as a monatomic species in its most stable form? A) sulfur B) oxygen C) hydrogen D)argon E) phosphorus Answer Pape 2 Which of the follow…

5) Which of the following is the MAJOR organic product from the reaction shown h

5) Which of the following is the MAJOR organic product from the reaction shown helow? Br2 heat or light A) B) C) D) 6) Which of the following is the most stable conformation for t…