Chemistry concepts and calculations

37- Equal amounts of water and 2-propanol are shaken together in a capped vial.

37- Equal amounts of water and 2-propanol are shaken together in a capped vial. Upon standing one observes A) a color change B) a homogeneous solution c) two phases with water on …

37. (I pt.) TRUE/FALSE. Diatomic elements such as F2 and Clh are polar because t

37. (I pt.) TRUE/FALSE. Diatomic elements such as F2 and Clh are polar because these elements are very electronegative. 38. (1 pt.) TRUEFALSE. RNA is a high-molar-mass nucleic aci…

37. A 0.1500 g sample containing dichromate is analyzed iodometrically. The reac

37. A 0.1500 g sample containing dichromate is analyzed iodometrically. The reactions are: Ch072-+ 61-(excess) + 14H+-2Cr3+ +312+7H20 12 + 2S2032-= 21-+ S4062 Calculate the percen…

37. Below is the chemical structure of a polynuclotide. Write the nucleotide seq

37. Below is the chemical structure of a polynuclotide. Write the nucleotide sequence of polynucleotide which will bind to the structure shown below to form a double OCH P- OCH NH…

37. Define and explain the importance of gluconeogenesis 38. Define and explain

37. Define and explain the importance of gluconeogenesis 38. Define and explain the importance of ketogenesis 39. Define the central dogma of molecular biology. Define transcripti…

37. If DS° for the following reaction is -149 J/mol. Calculate S° for Cl 2 (g).

37. If DS° for the following reaction is -149 J/mol. Calculate S° for Cl2 (g).             2Fe(s) + 3Cl2 (g) à 2FeCl3(s) Standard entropies for Fe = 27 J/mol; FeCl3 = 142 J/mol a)…

37. TRUE OR FALSE: Lithium hydroxide is an example of a strong base and carbonic

37. TRUE OR FALSE: Lithium hydroxide is an example of a strong base and carbonic acid (H2CO3) is an example of a strong acid. ANS. __________________ 38. Give the correct name for…

37. What is the oxidation number of C in (A) -2 (B C)+2 (D) 4 reaction takes pla

37. What is the oxidation number of C in (A) -2 (B C)+2 (D) 4 reaction takes place, what process occurs at the cathode? 3 ce'.(aq) + Cr(s) 3 Ces"(aq) + Cr(aq) formaldehyde, CH.0? …

37. Which salts of phosphoric acid are appropriate to use to make this buffer? (

37. Which salts of phosphoric acid are appropriate to use to make this buffer? (circle the correct ones) What are you basing your selection on? H3PO4 NaH2PO4 Na2HPO4 Na3PO 38. You…

37. Which species is/are present in a 1.0 M solution of aqueous HF? (A) HF molec

37. Which species is/are present in a 1.0 M solution of aqueous HF? (A) HF molecules, H0* ions, F ions, and HO molecules (B) Only H,O ions, F ions, and HiO molecules (C) Only HF m…

375.00 mL of a 0.010 M solution of NaCl are condensed down to 167.00 mL. Assumin

375.00 mL of a 0.010 M solution of NaCl are condensed down to 167.00 mL. Assuming the solution does not become saturated during this process, what is the final concentration of Na…

375.00 mL of a 0.010 M solution of NaCl are condensed down to 167.00 mL. Assumin

375.00 mL of a 0.010 M solution of NaCl are condensed down to 167.00 mL. Assuming the solution does not become saturated during this process, what is the final concentration of Na…

38 What is the IUPAC name for the compound shown below? a. ethyl 2-chlorobenzoat

38 What is the IUPAC name for the compound shown below? a. ethyl 2-chlorobenzoate b. 2-chloroethoxybenzoate c. d 2-chloroethoxyphenolate o-chloroethoxybenzoate 39. Which term corr…

38 What is the change in oxidation number for chromium in the redox reaction 2Cr

38 What is the change in oxidation number for chromium in the redox reaction 2Cr2O3+3C arrow 4Cr+3CO2 39 Most reaction are carried out in liquid solution or in the gaseous phase b…

38) Each time pyruvic acid enters the Krebs cycle A) 3 molecules of carbon dioxi

38) Each time pyruvic acid enters the Krebs cycle A) 3 molecules of carbon dioxide is liberated B) the molecule of carbon dioxide leave the mitochondria and diffuse through the cy…

38) What is the empirical formula for ethyl fluoride if the compound contains 49

38) What is the empirical formula for ethyl fluoride if the compound contains 49.97% carbon, 10.51% hydrogen, and 39.52% fluorine by mass? Select one: A. C4H10F4 B. C4H10F2 C. C25…

38) What type of change is represented by the decay of a fallen tree? 38) A) che

38) What type of change is represented by the decay of a fallen tree? 38) A) chemical B) physical C) analytical D) molecular E) All of the choices are correct 39) What type of pro…

38) What type of change is represented by the decay of a fallen tree? 38) A) che

38) What type of change is represented by the decay of a fallen tree? 38) A) chemical B) physical C) analytical D) molecular E) All of the choices are correct 39) What type of pro…

38) Which of the following make a stream a permanent stream? A. Constant flow ye

38) Which of the following make a stream a permanent stream? A. Constant flow year round. B. Not constant flow year round C. Water table below stream bed D. Arid climate E. None o…

38-39: consider the two standard curve graphs (below) generated from the Determi

38-39: consider the two standard curve graphs (below) generated from the Determining Salt Concentrations experiment: Density vs NaCl concentration 1.020 1.015 010 2.8 29 .0 31 32 …

38. In a coarse grained model of protein folding: a.every atom is represented an

38. In a coarse grained model of protein folding: a.every atom is represented and incorporated into the folding algorithm b.there is an attempt to minimize contact between each "g…

38. Nitrogen gas is much more soluble at higher pressures than at lower pressure

38. Nitrogen gas is much more soluble at higher pressures than at lower pressures. This is of great concern to SCUBA divers because of the danger of contractipg the bends. What is…

38. Nitrogen gas is much more soluble at higher pressures than at lower pressure

38. Nitrogen gas is much more soluble at higher pressures than at lower pressures. This is of great concern to SCUBA divers because of the danger of contractipg the bends. What is…

38. The formation of SO 3 from SO 2 and O 2 is an intermediate step in the manuf

38. The formation of SO3 from SO2 and O2 is an intermediate step in the manufacture of sulfuric acid, and it is also responsible for the acid rain phenomenon. The equilibrium cons…

38.Using VSEPR theory, match each generalized molecule below with the correct de

38.Using VSEPR theory, match each generalized molecule below with the correct descriptions on the right. Some of the descriptions may match more than one molecule or none of the m…

382 Report Sheet Heat of Neutralization A piece of metal weighing 5.10 g at a te

382 Report Sheet Heat of Neutralization A piece of metal weighing 5.10 g at a temperature of 48.6°C was placed in a calorimeter in 20.00 mL of water at 22.1°C·The final equilibriu…

38: What is the molarity of a solution made by dissolving 8.49 g of sodium aceta

38: What is the molarity of a solution made by dissolving 8.49 g of sodium acetate in water and diluting to 750. mL? (molar mass NaC2H3O2 is 82.0 g/mol.) 39: An open-ended mercury…

39 12. Use clean 10 mL graduated cylinders and follow the chart to carefully mea

39 12. Use clean 10 mL graduated cylinders and follow the chart to carefully measure the volume of each reagent indicated into separate, well-drained shell vials. 0.20-M Shell Via…

39 Household sugar, sucrose, has the molecular formula C12H22O\". What is the %

39 Household sugar, sucrose, has the molecular formula C12H22O". What is the % of on in sucrose, by mass? A) 26.7% B) 33.3% C) 41.4% D) 42.1% E) 52.8% 40 Balance the following equ…

39) Consider one molecule or formula unit of the following compounds. W hich one

39) Consider one molecule or formula unit of the following compounds. W hich one has the most oxygens (either oxygen atoms or oxide ions)? a. Trinitrogen Octoxide b. Aluminum Sulf…

39) Consider one molecule or formula unit of the following compounds. Which one

39) Consider one molecule or formula unit of the following compounds. Which one has the most oxygens (either oxygen atoms or oxide ions)? 40) Given that the cation can have either…

39) Consider one molecule or formula unit of the following compounds. Which one

39) Consider one molecule or formula unit of the following compounds. Which one has the most oxygens (either oxygen atoms or oxide ions)? a. Trinitrogen Octoxide b. Aluminum Sulfa…

39. (A) In the actual O 3 molecule the best description of the number of bonds b

39. (A) In the actual O3 molecule the best description of the number of bonds between O-O atoms is ____ bonds. CHOICES: 1, 1.5, 2, 2.5, 3 (B) In the actual CO2 molecule the best d…

39. An aqueous solution of calcium hydroxide is standardized by titration with a

39. An aqueous solution of calcium hydroxide is standardized by titration with a 0.124 M solution of perchloric acid. If 29.1 mL of base are required to neutralize 22.5 mlL of the…

39. Calculate the concentration of Al \' in a saturated solution of Al(OH), Al(O

39. Calculate the concentration of Al ' in a saturated solution of Al(OH), Al(OH), is 20x 10 in a saturated solution of AlOH), K, for a. 3.0x 10 b. 7.0 x 109 c. 2.0 x 10 d. 3.0 x …

39. If a system\'s instruction set consists of an 8-bit opcode, what is the maxi

39. If a system's instruction set consists of an 8-bit opcode, what is the maximum number of output signal lines required for the control unit? A) 8                               …

39. Riboflavin (Vitamin B) is determined in a cereal sample in 5% acetic acid so

39. Riboflavin (Vitamin B) is determined in a cereal sample in 5% acetic acid solution. A calibration curve was prepared by measuring the fluorescence intensities of a series of s…

39. Why is it easier to analyze a mixture of atomic species by absorption spectr

39. Why is it easier to analyze a mixture of atomic species by absorption spectroscopy than it is to analyze a mixture of molecular species? (A) Atomic species do not have side re…

39: An open-ended mercury manometer is used to measure the pressure exerted by a

39: An open-ended mercury manometer is used to measure the pressure exerted by a trapped gas as shown in the figure. Atmospheric pressure is 750. mmHg. What is the pressure (in mm…

3: (10 points) Free cyanide in aqueous solution can be determined indirectly by

3: (10 points) Free cyanide in aqueous solution can be determined indirectly by atomic absorption based on its ability to dissolve silver as it passes through a porous silver memb…

3: Consider a relation that belongs to the Software academy shipment data. You h

3: Consider a relation that belongs to the Software academy shipment data. You have been given a task to analyze the following relation and Professor Turing is counting on you (a …

3:22 PM ooo T-Mobile 87% K Directions on how to subm HOW TO DO A MUDDIEST POINT

3:22 PM ooo T-Mobile 87% K Directions on how to subm HOW TO DO A MUDDIEST POINT Please print and read this document Before you start the discussion board for this week, please rea…

3:42 PM OO Verizon LTE 33% 2 of 2 Done the letter onay for your anawen 2 member

3:42 PM OO Verizon LTE 33% 2 of 2 Done the letter onay for your anawen 2 member for an and S2 sa and 88 ich 16 and 36 and vs 2 consider the following grid Compounds with a positiv…

3:49 LTE Experiment 9: Qualitative Analysis...r 3. You carry out the three class

3:49 LTE Experiment 9: Qualitative Analysis...r 3. You carry out the three classification reactions on your second unknown salt sample. You make the observations given below for e…

3:49 PM T-Mobile F o 28% o edugen.wileyplus.com 7.27 Each of the following names

3:49 PM T-Mobile F o 28% o edugen.wileyplus.com 7.27 Each of the following names is incorrect. Give the correct name and explain your reasoning. (a) trans-3-Pentene Correct name i…

3:49 PM outlook.office.com AT&T; The use of Grignard reagents to produce compoun

3:49 PM outlook.office.com AT&T; The use of Grignard reagents to produce compounds such as triphenylmethanol has been found to be not only a useful method of synthesizing an e…

3:59 PM twu.blackboard.com .\'I Sprint 58% Page 70 of 72 71 of 72 Name SectionDa

3:59 PM twu.blackboard.com .'I Sprint 58% Page 70 of 72 71 of 72 Name SectionDae Lab Partners Data Sheet Comparing with the peotein marker, how large is the polypeptide in cach st…

3A The chemical Potential of Lithium In Pure Lithium Potential Is Lower Than The

3A The chemical Potential of Lithium In Pure Lithium Potential Is Lower Than The Chemical Potential Of Li2O at Room Temperature Due To So Many Factors For Instance Consider This E…

3A. Some people have an allergic reaction to the food preservative sulfite (SO3

3A. Some people have an allergic reaction to the food preservative sulfite (SO3 2- ), which can be measured by instrumental methods or by a redox titration: Initially, a solution …

3A. The vapor pressure of pure liquid A is 575 Torr and of pure liquid B is 390

3A. The vapor pressure of pure liquid A is 575 Torr and of pure liquid B is 390 Torr at a temperature of 300 K. The liquids are combined to form a solution. The mole fraction of t…