Chemistry concepts and calculations

the groundwater well used for water supply of City of Nowhere, USA contain Answe

the groundwater well used for water supply of City of Nowhere, USA contain Answer all questions. Nowhere, USA contains 5.3 mgyl of 1. The groundwater well used for water supply of…

the half life of potassium 40 is 1.7 x 10^9 years. a sample of rock contains 1.0

the half life of potassium 40 is 1.7 x 10^9 years. a sample of rock contains 1.0 x 10^6 g of potassium 40. how much potassium 40 was in that sample 5.3 x 10^9 years ago? the half …

the heat of combustion of propane C3H8, 2220 kj/mol the specific heat of copper

the heat of combustion of propane C3H8, 2220 kj/mol the specific heat of copper is .385j/g C how many grams of propane must be burned to raise the temperature of a 5.0kg block of …

the high temperature contribution of vibrational modes to the molar heat capacit

the high temperature contribution of vibrational modes to the molar heat capacity of a solid at constant volume is R for each mode of vibrational motion. Hence, for a monatomic so…

the high temperature contribution of vibrational modes to the molar heat capacit

the high temperature contribution of vibrational modes to the molar heat capacity of a solid at constant volume is R for each mode of vibrational motion. Hence, for a monatomic so…

the highest voltage. What is the cell notation for this voltaic cell. Note: I’m

the highest voltage. What is the cell notation for this voltaic cell. Note: I’m not sure if I should include the NO3 from the salt bridge in the notation. 2. Write the balanced he…

the html validator at http://validator.w3.org allows you to validate a webpage b

the html validator at http://validator.w3.org allows you to validate a webpage by entering a URL, uploading a file, or directly inputting the code into the validation window. wHic…

the hybrid sp 3 orbitals are given by: sp a 3 = (1/2) (2s +2p x + 2p y + 2p z )

the hybrid sp3 orbitals are given by: spa3 = (1/2) (2s +2px + 2py + 2pz) spb3 = (1/2) (2s -2px - 2py + 2pz) spc3 = (1/2) (2s +2px - 2py - 2pz) spd3 = (1/2) (2s -2px + 2py - 2pz) S…

the integrated rate laws for zero, first, second reaction was 0.100 M after 100s

the integrated rate laws for zero, first, second reaction was 0.100 M after 100s and 4.00*10^-2 M after 390 ?offset next&assignmentProblemID; 80071304 Signed in as Jasmine Dav…

the is the distallition expirment of an orginic chem class i want the pre and po

the is the distallition expirment of an orginic chem class i want the pre and post lab questions to be solved as soon as possible. Measure 30 mL of an unknown mixture into a 100-m…

the ka values at 25 degrees celsius are given below. I will use E as x10^ for si

the ka values at 25 degrees celsius are given below. I will use E as x10^ for simplification 1.8E-5 7.6E-4 1.3E-3 1.4E-3 2.2E-2 which of the following acids has a ka = 2.2E-2 a) c…

the kinetic energy operator is proportional tod 2 /dx 2 . which of the following

the kinetic energy operator is proportional tod2/dx2. which of the following functions areeigenfunctions of d2/dx2 : a) eax   b) e -a(x^2) c) k d) kx2 e) ax + b f) cos(kx + 5) ? G…

the lab (20 pts) Post-Lab Questions 1. (5 pt s) Th is reaction works with trans-

the lab (20 pts) Post-Lab Questions 1. (5 pt s) Th is reaction works with trans-cinnamic acid. Using your knowledge of Thin Layer Chromatography, why is t identificaio wth wto?s r…

the labels fell off three bottles on the stock room shelf. The labels read 2-hex

the labels fell off three bottles on the stock room shelf. The labels read 2-hexanone, benzaldehyde, and cyclohexanol. Suggest an experimental procedure by which the composition o…

the laboratory instructor gives you a test tube Laboratory Questions Pre- show A

the laboratory instructor gives you a test tube Laboratory Questions Pre- show ALL WORK TO RECEIVE CREDIT. A dean, porcelain crucible weig and the mass is recorded. A mixture cont…

the laboratory technician accidentally mixed NaHCO3 with BaCl2•2H2O instead of K

the laboratory technician accidentally mixed NaHCO3 with BaCl2•2H2O instead of KCl when preparing unknown mixtures for this experiment. A. How would this mistake affect the calcul…

the language is c do not use arrays The program first reads an integer n from th

the language is c do not use arrays The program first reads an integer n from the input.It displays a message simply stating the value of n.It then displays an “up” staircase with…

the latent heat of fusion of ice is 333kJ/kg. in the freezer compartment of a re

the latent heat of fusion of ice is 333kJ/kg. in the freezer compartment of a refrigerator, a tray of ice holds 12 cubes of water each of mass 8.0 g. if the COP of the refrigerato…

the liquid-solid-vapor triple point of a pure component is T triple = 10 C and P

the liquid-solid-vapor triple point of a pure component is T triple = 10 C and P triple = 0.05 bar. The molar densities of the liquid and solid phases are pl = 22 kmol/m^3 and ps …

the main element in steel the main element in steel the main element in steel sp

the main element in steel the main element in steel the main element in steel spilateseams and lakes now come mainly from a) car exhaust c) fertilizers b) coal-fired power plants …

the mass is 3.25g for 3-nitrophtalic acid, how would you complete the table? ple

the mass is 3.25g for 3-nitrophtalic acid, how would you complete the table? please show all work on how you got rxn weight and mmol. thanks. 2.00 mL mmol Acetic Acid 1.049 g/mL 6…

the mass of silica needed to produce one- 325mg of aspirin tablet. the formulae

the mass of silica needed to produce one- 325mg of aspirin tablet. the formulae is C4H6O3 + C7H6O3 --> C9H8O4 + C2H4O2

the mass of silica needed to produce one- 325mg of aspirin tablet. the formulae

the mass of silica needed to produce one- 325mg of aspirin tablet. the formulae is C4H6O3 + C7H6O3 --> C9H8O4 + C2H4O2

the mass of the isolated acetamilhophel lll youl hocoook. funnel for at least 15

the mass of the isolated acetamilhophel lll youl hocoook. funnel for at least 15 minutes. Record Determine the percent yield of the product. Preparation of Acetaminophen Standards…

the mass percentage of chromium in steel is often much higher than that of manga

the mass percentage of chromium in steel is often much higher than that of manganese. If a steel sample of mass 0.800g has 34.1% Cr and is oxidized and diluted, calculate the conc…

the melting point of the crystal started at 123 degrees and finshed at 130degree

the melting point of the crystal started at 123 degrees and finshed at 130degrees celcius. also the product weighed 0.79g. ? Calculate the percent yield and explain your result ? …

the memory metal, nitinol, is a alloy of nickel and titanium. It is called a mem

the memory metal, nitinol, is a alloy of nickel and titanium. It is called a memory metal because after being deformed, a piece of nitinol wire will return to its original shape. …

the memory metal, nitinol, is a alloy of nickel and titanium. It is called a mem

the memory metal, nitinol, is a alloy of nickel and titanium. It is called a memory metal because after being deformed, a piece of nitinol wire will return to its original shape. …

the mercury level in a capillary tube placed in a dish of mercury is actually be

the mercury level in a capillary tube placed in a dish of mercury is actually below the surface of the mercury in the dish. please choose the answer that best explains the phenome…

the mixture used in today’s experiment was prepared as 1:1:1 mixture (by mass) o

the mixture used in today’s experiment was prepared as 1:1:1 mixture (by mass) of sand ,salt and salicylic acid . what does this underlined term mean? fo your result for the mass …

the molar composition of a mixture is 80% hexane and 20% pentane. Use the phase

the molar composition of a mixture is 80% hexane and 20% pentane. Use the phase diagram above to estimate the compostion of the vapor over the liquid. This vapor is condensed and …

the molar heats of fusion and sublimation of molecular iodine are 15.27 kJ/mol a

the molar heats of fusion and sublimation of molecular iodine are 15.27 kJ/mol and 62.30 kJ/mol respectively. estimate the molar heat of vaporization of liquid iodine the molar he…

the molar mass of an enzyme was determined by dissolving it in water and measuri

the molar mass of an enzyme was determined by dissolving it in water and measuring the osmotic pressure at 293K via the height of the water column. the following data were obtaine…

the molar volume of gas determined in this lab co the molar volume of gas determ

the molar volume of gas determined in this lab co the molar volume of gas determined in this lab co the molar volume of gas determined in this lab co Molar Volume of a Gas Postlab…

the montreal protocol is an international agreement that wentinto effect in the

the montreal protocol is an international agreement that wentinto effect in the late 1980s. As part of this agreement, theproduction and use of the "Freon" compounds shown below w…

the most accurate description of tRNA structure and function is a. tRNA is multi

the most accurate description of tRNA structure and function is a. tRNA is multicomponent system composed of two subunits and multiple enzymes essention for protein translation b.…

the myosin head extends on dissociate from myosin D. ATP binds to F-factin E. AD

the myosin head extends on dissociate from myosin D. ATP binds to F-factin E. ADP dissociate from myosin 6. The word 'epitope' means synonyms to isotope 8. a domain C. a protein m…

the names and chemical formulae of some chemical compounds zinc iodide methanol

the names and chemical formulae of some chemical compounds zinc iodide methanol E objective Knowledge Check The names and chemical formulae of some chemical compounds are written …

the net transformation is Zn(s)+1/2O2(g)=> ZnO(s) calculate the emf under actual

the net transformation is Zn(s)+1/2O2(g)=> ZnO(s) calculate the emf under actual operating conditions when thepartial pressure of O2 is 0.21 atm. (book gives answer as 1.63V bu…

the next three problems deal with titration of 125 mL of 1.75 M methylamine, CH3

the next three problems deal with titration of 125 mL of 1.75 M methylamine, CH3NH2 (Kb - 4.4 x10-4) with 0.25 M HCl Water will be a major species throughout the titration. The ch…

the next three problems deal with titration of 125 mL of 1.75 M methylamine, CH3

the next three problems deal with titration of 125 mL of 1.75 M methylamine, CH3NH2 (Kb - 4.4 x10-4) with 0.25 M HCl Water will be a major species throughout the titration. The ch…

the next three problems deal with titration of 125 mL of 1.75 M methylamine, CH3

the next three problems deal with titration of 125 mL of 1.75 M methylamine, CH3NH2 (Kb - 4.4 x10-4) with 0.25 M HCl Water will be a major species throughout the titration. The ch…

the next three problems deal with titration of 125 mL of 1.75 M methylamine, CH3

the next three problems deal with titration of 125 mL of 1.75 M methylamine, CH3NH2 (Kb - 4.4 x10-4) with 0.25 M HCl Water will be a major species throughout the titration. The ch…

the number in trial 1 for initial mass is 5.8532 g in case it\'s hard to read. n

the number in trial 1 for initial mass is 5.8532 g in case it's hard to read. need all questions answered clearly and numbered please thank you DATA TABLE Trial 1 Trial 2 Initial …

the number of a certain radioactive nuclide present in a sample decays from 160

the number of a certain radioactive nuclide present in a sample decays from 160 to 20 in 39 minutes. what is the half-life of this radioactive species? Please explain thanks the n…

the number of significant digits in 650600000 is A) at most 4 B) exactly 3 C) at

the number of significant digits in 650600000 is A) at most 4 B) exactly 3 C) at least 4 D) at least 9 E) exactly 9 2. Correctly rounded, the sum of 1.2*10^-3 cm and 2.7*10^-4 cmi…

the nutrition facts are given for a packet of instant oatmeal. calculate the ene

the nutrition facts are given for a packet of instant oatmeal. calculate the energy that is available from the total carbohydrates, total fat, and protein in one serving of this i…

the ollowing standard redustion poteriials c indioated averall eeection in spozt

the ollowing standard redustion poteriials c indioated averall eeection in spoztaneous nder stand ard conditions 0.74V A) Spoatareous Based en your anawer to 1 slbave, the peactio…

the osmotic pressure Of a liver cell is 6atm. In response to insulin, liver cell

the osmotic pressure Of a liver cell is 6atm. In response to insulin, liver cells take up glucose and concomitantly expand in size. How much glucose can a liver cell take up if it…

the osmotic pressure at 25.0°C is observed to . What is the mass percent of MgCl

the osmotic pressure at 25.0°C is observed to . What is the mass percent of MgCl2 in the solid? (Assume ideal behavior for the solution.) be 0.5950 atm 115. Formic acid (HCO,H) is…