Chemistry concepts and calculations

1. (1 pt.) The instrument that is used to measure the optical activity of a comp

1. (1 pt.) The instrument that is used to measure the optical activity of a compound is called a a. actimeter b. optimeter c. polarimeter d. spectrometer 2. (1 pt) A bottle of 1-p…

1. (10 Points): (a) What type of latice, from the possibilities given in Table 4

1. (10 Points): (a) What type of latice, from the possibilities given in Table 4.4 of your text book, is the salt MnF, most likely to crystallize in? Why? (b) Assuming this lattic…

1. (10 points A Monte Carlo analysis can be used for optimization. For example,

1. (10 points A Monte Carlo analysis can be used for optimization. For example, the trajectory of a ball can be computed with 2vo cos2 Go where y is the achieved height in meters …

1. (10 points A script stores information on potential subjects for an experimen

1. (10 points A script stores information on potential subjects for an experiment within an array of structures called mysubj ects. The following shows an example of the various s…

1. (10 points) Consider the following reaction: CH3Br(a) +OH-(aq) -> CH3OH(aq) +

1. (10 points) Consider the following reaction: CH3Br(a) +OH-(aq) -> CH3OH(aq) + Br(aq) The rate law for this reaction is first order in CH3Br and first order in OH-. When [CH3…

1. (10 points) Indicate whether each of the following statements is true or fals

1. (10 points) Indicate whether each of the following statements is true or false: A. All ionic compounds are soluble. B. Two molecules can have different molecular formulas but t…

1. (10 pts) List and Describe the primary compositional layers that comprise the

1. (10 pts) List and Describe the primary compositional layers that comprise the earth's interior? [Hint: the core is compositionally one layer but mechanically two.] 2. (10 pts) …

1. (10 pts) What are the diagrams defined in the UML Standard. Give a one or two

1. (10 pts) What are the diagrams defined in the UML Standard. Give a one or two sentence description of each one. 2. (10 pts) Given the following code, how should the toString me…

1. (10 pts) What is wrong with the following program? 1 public class MyClassA {

1. (10 pts) What is wrong with the following program? 1 public class MyClassA { 2    int v = 12; 3 4    public MyClassA (int pV) { 5      v = pV; 6 } 7 8    public static void mai…

1. (10) The concentration of cyanide ion, CN, in a copper plating bath can be de

1. (10) The concentration of cyanide ion, CN, in a copper plating bath can be determined by complexometric titration with Ag'. A 5.00 mL sample from the bath is treated with 100 m…

1. (100 pts) Write a program that swaps the elements of an array pairwise. Start

1. (100 pts) Write a program that swaps the elements of an array pairwise. Start from the left of the array, take 2 elements at a time and swap the two elements. Continue in this …

1. (100 pts) Write a program to shuffle the elements of a 2-dimensional array an

1. (100 pts) Write a program to shuffle the elements of a 2-dimensional array and check if there are any duplicates in the array. (a) Declare a 2-dimensional array of 100 integers…

1. (100 pts) Write a program to shuffle the elements of a 2-dimensional array an

1. (100 pts) Write a program to shuffle the elements of a 2-dimensional array and check if there are any duplicates in the array. (a) Declare a 2-dimensional array of loo integers…

1. (130 points). On the answer sheet provided, darken the space of the response

1. (130 points). On the answer sheet provided, darken the space of the response that best corresponds to the correct answer for each of the following questions. Note that question…

1. (14 marks) Substances A and B were analysed chromatographically on two column

1. (14 marks) Substances A and B were analysed chromatographically on two columns, X and Y, with the same stationary phase type and the same eluent. The outcome of the chromatogra…

1. (15 points; 3 points each) Multiple choice: circle the best response to each.

1. (15 points; 3 points each) Multiple choice: circle the best response to each. 1.1. In design-by-contract, the code responsible for making sure the precondition (requires clause…

1. (15 pts.) Consider the mod 10 multiplication table (see the table on the righ

1. (15 pts.) Consider the mod 10 multiplication table (see the table on the right, below): Modulus:1 Enter a modulus value>1, and click Generate FFPFFPF 001 3486789 FEEFF EFFF …

1. (16 points) Answer the following questions related to equilibrium and chemica

1. (16 points) Answer the following questions related to equilibrium and chemical potentials. For the reaction 2NH3(g)N2(g)+3H2(g), a mixture of nitrogen, hydrogen and ammonia gas…

1. (2 points each) Complete the following statements or definitions. The M + 2 p

1. (2 points each) Complete the following statements or definitions. The M + 2 peak of an organic molecule has a relative abundance of 98% compared to the molecular ion. This comp…

1. (2 points) Elemental iron is produced in what is called the thermite reaction

1. (2 points) Elemental iron is produced in what is called the thermite reaction because it produces enough heat (850.0 kJ of heat energy) that the iron is initially in the molten…

1. (2 points) Write a personalized BMI calculator in the form of a function call

1.      (2 points) Write a personalized BMI calculator in the form of a function called  bmi_calculator(). This function prompts the user for their appelation, their first name, t…

1. (2 pts each) Identify the following equipments/ processes based on the descri

1. (2 pts each) Identify the following equipments/ processes based on the description: vessels designed to allow a reaction to occur as two or more flows are exposed to each other…

1. (2 pts) Which of the following is in the correct order of reactivity of acid

1. (2 pts) Which of the following is in the correct order of reactivity of acid derivatives towards nucleophilic attack? A) esters> acid anhydrides> amides C) carboxylates e…

1. (2 pts.) One problem with organic equations is that we tend to focus on what

1. (2 pts.) One problem with organic equations is that we tend to focus on what is happening to one molecule at a time, we forget that there are many, many molecules undergoing CO…

1. (2) At pH 5.0, what is the concentration of OH - in solution? ___________ 2.

1. (2) At pH 5.0, what is the concentration of OH- in solution? ___________ 2. (2) If the monoprotic acid HAb has a pK of 3 and a solution is adjusted to pH 5: a) what is the conc…

1. (20 %) Glucose (C6H12O6) is being converted to hexane by reaction of glucose

1. (20 %) Glucose (C6H12O6) is being converted to hexane by reaction of glucose with hydrogen (H2) according to Reaction 1 in a tubular reactor. The feed to the reactor has a mola…

1. (20 points) A new enzyme activity was identified in a partially purified cell

1. (20 points) A new enzyme activity was identified in a partially purified cell lysate. The investigators were interested in the enzyme and how an inhibited worked. They went ahe…

1. (20 points) An analytical balance was used to weigh 200.01 mg o solid sodium

1. (20 points) An analytical balance was used to weigh 200.01 mg o solid sodium acetate(NaCJH3o-NaAc MW = 82.0343, pKa (HC-H3O2 ~ HAc)- 4.763 which was transferred to a 100.00 mL …

1. (20 points) The figure below (adapted from: Rauch, J.N. and T.E. Graedel (200

1. (20 points) The figure below (adapted from: Rauch, J.N. and T.E. Graedel (2007) Earth's anthrobiogeochemical copper cycle, Global Biogeochemical Cycles, 21, 2, doi 0028500 depi…

1. (20 points) Write a VBA code that can find the determinant of any size matrix

1. (20 points) Write a VBA code that can find the determinant of any size matrix that is given by user. 3. (30 points) Develop a VBA program that can solve a problem like question…

1. (20 total) In Earth’s atmosphere, the mixing ratio of hydrogen sulfide (H2S,

1. (20 total) In Earth’s atmosphere, the mixing ratio of hydrogen sulfide (H2S, MW=34.09g/mol) is 100 pptv. a) If you were to randomly select one hundred billion (1011) particles …

1. (25 points) Consider a gentleman generating 60 W of metabolic heat steadily w

1. (25 points) Consider a gentleman generating 60 W of metabolic heat steadily while doing sedentary work, and dissipating it by convection and perspiration. He is wearing clothes…

1. (25 pts) For the mixture of nC6 (H) and nCs (C), using the y-x and T-y-x diag

1. (25 pts) For the mixture of nC6 (H) and nCs (C), using the y-x and T-y-x diagrams at 101 kPa in the figures below, determine (1) the ratio of mole fraction in Vapor and Liquid …

1. (25 pts) For the mixture of nC6 (H) and nCs (C), using the y-x and T-y-x diag

1. (25 pts) For the mixture of nC6 (H) and nCs (C), using the y-x and T-y-x diagrams at 101 kPa in the figures below, determine (1) the ratio of mole fraction in Vapor and Liquid …

1. (2d) From mixing NaHSo3 with HCl and then adding K2Cr2O7. Write the balanced

1. (2d) From mixing NaHSo3 with HCl and then adding K2Cr2O7. Write the balanced half-reation equation for the reduction of the dichromate ion, Cr2)7 (2-) in acid solution. 2. (2c)…

1. (2pt) There are four blocks of different materials, which are placed in a wat

1. (2pt) There are four blocks of different materials, which are placed in a water barrel as shown below. These blocks have same volume. Which one of the following statements is t…

1. (2s-3s) tartaric acid, HOOCCH(OH)CH(OH)COOH has an opticalactivity of -12 and

1. (2s-3s) tartaric acid, HOOCCH(OH)CH(OH)COOH has an opticalactivity of -12 and mp of 170. a.) what is the absolute configuration, specific rotation andthe melting point of its e…

1. (3 & 4) Give the value for standard atmospheric pressure in each of the follo

1. (3 & 4) Give the value for standard atmospheric pressure in each of the following units: A) millimeters of mercury B) centimeters of mercury C) inches of mercury D) PSI 2. …

1. (3 & 4) Give the value for standard atmospheric pressure in each of the follo

1. (3 & 4) Give the value for standard atmospheric pressure in each of the following units: A) millimeters of mercury B) centimeters of mercury C) inches of mercury D) PSI 2. …

1. (3 points) An electron is initially at rest in a uniform electric field of 2.

1. (3 points) An electron is initially at rest in a uniform electric field of 2.5 V/m. What will be the velocity of the electron 10 seconds later? 2. (3 points) Two spherical cavi…

1. (3 points) Define a struct, named FullName, that contains the following field

1. (3 points) Define a struct, named FullName, that contains the following fields: lastname - a string firstname - a string midInitial - a char 2. (4 points) Define a struct, name…

1. (3 points) In one or two paragraphs, describe how you used the results of the

1. (3 points) In one or two paragraphs, describe how you used the results of the three assays to identify solutions A, B, C, and D as glucose, fructose, lactose, and sucrose. Be s…

1. (3 points) Please identify the following chemical reactions by type. 2 AgNO3

1. (3 points) Please identify the following chemical reactions by type. 2 AgNO3 (aq) + CuCl2 (aq) 2 AgCl (s) + Cu(NO3)2 (aq) Haso4 (aq) + 2 KOH (aq) K2SO4 (aq) + 2H20() Pb(C2H3O2)…

1. (3 pts) During fractional distillation, liquid can be seen dripping from the

1. (3 pts)  During fractional distillation, liquid can be seen dripping from the fractionating column back into the distilling flask. What effect does this returning condensate ha…

1. (3 pts) Will a micture of calciumbromide and lithiumsulfate result in a preci

1. (3 pts) Will a micture of calciumbromide and lithiumsulfate result in a precipitate? If so, ive the formula unit of the 2. (8 pts) Write balanced total lonic equations for the …

1. (3 pts) Will formula unit of the p a mixture of caleiumbromide and lithiumsul

1. (3 pts) Will formula unit of the p a mixture of caleiumbromide and lithiumsulfate result in a precipitate? If so, give the 2. (8 pts) rite balanced total lonie equations for th…

1. (30 points) Electrolysis is carried out on an aqueous solution containing 0.5

1. (30 points) Electrolysis is carried out on an aqueous solution containing 0.50M zinc sulfate and 0.50M nickel sulfate. Specify the nature of the products generated at the elect…

1. (30 points) Use BlueJ to write a program for displaying “Hello World!”. 2. (5

1. (30 points) Use BlueJ to write a program for displaying “Hello World!”. 2. (50 points) Modify your Heater class to define three new integer fields: min, max, and increment. The…

1. (35 pts) A tennis ball is hit with a speed of 24.1 m/s at an angle of s the t

1. (35 pts) A tennis ball is hit with a speed of 24.1 m/s at an angle of s the tennis balil ohe ball in from a height of 0.550 m above the ground. The opposing pand downward part …

1. (4 points) In an experiment, ground water flows through a sediment column (43

1. (4 points) In an experiment, ground water flows through a sediment column (43.5 cm in length and 5 cm in diameter) at a rate of 4.4 ml/min (volumetric discharge). The porosity …