Chemistry concepts and calculations

1) Consider the reaction: A (aq) B (aq) at 253 K where the initial concentration

1) Consider the reaction: A (aq) B (aq) at 253 K where the initial concentration of A = 1.00 M and the initial concentration of B = 0.000 M. At equilibrium it is found that the co…

1) Consider the reaction: HC 2 H 3 O 2 and H 3 O + H 2 O and C 2 H 3 O 2 - H 2 O

1)Consider the reaction: HC2H3O2 and H3O+ H2O and C2H3O2- H2O and H3O+ HC2H3O2 and C2H3O2- all are bases 2) What would the concentration of H3O+ be if the concentration of OH- was…

1) Consider the reaction: HC2H3O2 + H2O > H3O+ + C2H3O2- Choose the pair of subs

1) Consider the reaction: HC2H3O2 + H2O > H3O+ + C2H3O2- Choose the pair of substances that are both bases in the reaction. HC2H3O2 and H3O+ H2O and C2H3O2- H2O and H3O+ HC2H3O…

1) Consider the titration of a 36.0 mL sample of 0.180 M HBr with 0.210 M KOH. D

1) Consider the titration of a 36.0 mL sample of 0.180 M HBr with 0.210 M KOH. Determine each of the following: Part B the volume of added base required to reach the equivalence p…

1) Consider the truth of each of the following statements and provide correction

1) Consider the truth of each of the following statements and provide corrections where required. (a) A catalyst introduces a new reaction pathway with lower enthalpy of activatio…

1) Consider the unbalanced equation for the combustion of hexane: 2C6H14(g)+19O2

1) Consider the unbalanced equation for the combustion of hexane: 2C6H14(g)+19O2(g)12CO2(g)+14H2O(g) Determine how many moles of O2 are required to react completely with 6.8 moles…

1) Consider two non-parallel forces, each with a specified magnitude and directi

1) Consider two non-parallel forces, each with a specified magnitude and direction, acting on an object. We wish to add a third force such that the sum of all three forces is zero…

1) Control subjects in a double-blind test of a new drug are a) informed of what

1) Control subjects in a double-blind test of a new drug are a) informed of what drug they are getting. b) informed of what drug they are getting but their private physicians are …

1) Control subjects in a double-blind test of a new drug are a) informed of what

1) Control subjects in a double-blind test of a new drug are a) informed of what drug they are getting. b) informed of what drug they are getting but their private physicians are …

1) Convert the English expression “If weight is greater than 150” to a Java expr

1) Convert the English expression “If weight is greater than 150” to a Java expression 2) Convert the English expression “If the value is between 0 and 100 inclusively” to a Java …

1) Convert the following into a balanced equation: when lead (II) nitrate soluti

1) Convert the following into a balanced equation: when lead (II) nitrate solution is added to sodium chloride solution, solid lead (II) chloride forms and sodium nitrate solution…

1) Convert the following into a balanced equation: when lead(II) nitrate is adde

1) Convert the following into a balanced equation: when lead(II) nitrate is added to sodium bromide solution, solid lead(II) bromide forms and sodium nitrate solution remains. Be …

1) Copper metal (Cu) can be dissolved in nitric acid. The chemical equation for

1) Copper metal (Cu) can be dissolved in nitric acid. The chemical equation for the reaction which occurs is: Cu + 4HNO3 -----> Cu(NO3)2  + 2NO3  + 2H2O a) In order to produce …

1) Copper reacts with nitric acid to produce copper(II) nitrate, nitrogen dioxid

1) Copper reacts with nitric acid to produce copper(II) nitrate, nitrogen dioxide gas, and water. Cu(s) + 4HNO3(aq) Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l) If you have 0.500 moles of Cu,…

1) Copper solutions are typically blue to blue green in color. What color of lig

1) Copper solutions are typically blue to blue green in color. What color of light would they be expected to absorb in the greatest amount? - Green - Blue - Red - Violet 2) Based …

1) Covalent catalysis is used by many enzymes to cleave peptide bonds. Which of

1) Covalent catalysis is used by many enzymes to cleave peptide bonds. Which of the following amino acids would not facilitate this type of catalysis? (Think of the structure of t…

1) Create the following GUI, so that when your program is running, your user can

1)      Create the following GUI, so that when your program is running, your user can input information regarding a client and hit the save button to save the information out to a…

1) Create two JAVA linked hash sets {\"George\", \"Jim\", \"Blake\", \"Kevin\",

1) Create two JAVA linked hash sets {"George", "Jim", "Blake", "Kevin", "Michael"} and {"George", "Katie", "Kevin", "Michelle", "Ryan"} and find their union, intersection, and dif…

1) Cu+2 forms which color when dissolved in water? A) clear B) orange C) blue D)

1) Cu+2 forms which color when dissolved in water? A) clear B) orange C) blue D) black 2) Calculate the percent recovery of copper if: 1.5-g is the initial amount and 1.2-g is the…

1) Cyclopropane thermally decomposes by a first order reaction to form propene.

1) Cyclopropane thermally decomposes by a first order reaction to form propene. a) If the rate constant is 6.0 s–1, what is the half–life of the reaction? b) How long does it take…

1) Cyclopropane, C3H6, is a general anesthetic. A 4.4-L sample has a pressure of

1) Cyclopropane, C3H6, is a general anesthetic. A 4.4-L sample has a pressure of 4.5 atm. What is the final volume, in liters, of this gas given to a patient at a pressure of 1.0 …

1) DILUTION EFFECT ON THE PERCENT IONIZATION OF A WEAK ACID a. A weak acid, HX,

1) DILUTION EFFECT ON THE PERCENT IONIZATION OF A WEAK ACID a. A weak acid, HX, is 1.3 % ionized in 0.20 M solution. What percent of HX is ionized in a 0.030 M solution? Show the …

1) DILUTION EFFECT ON THE PERCENT IONIZATION OF A WEAK ACID a. A weak acid, HX,

1) DILUTION EFFECT ON THE PERCENT IONIZATION OF A WEAK ACID a. A weak acid, HX, is 1.3 % ionized in 0.20 M solution. What percent of HX is ionized in a 0.030 M solution? Show the …

1) DNA\'s function as an unique genetic code for an organism is due to: sequence

1) DNA's function as an unique genetic code for an organism is due to: sequence of nitrogenous base in the DNA molecule and ___ A) Variety of sugar phosphate backbones in differen…

1) Declare a struct named PatientData that contains two integer data members nam

1)   Declare a struct named PatientData that contains two integer data members named heightInches and weightPounds. Sample output for the given program: #include <stdio.h> /…

1) Define triple point. A) The temperature that is unique for a substance. B) Th

1) Define triple point. A) The temperature that is unique for a substance. B) The temperature at which the boiling point equals the melting point. C) The temperature and pressure …

1) Describe how to prepare 5.00 liters of a 5.00% (w/w)NaCl solution, which has

1) Describe how to prepare 5.00 liters of a 5.00% (w/w)NaCl solution, which has a density of 1.06 g/mL, from pure solidsodium chloride. 2) Describe how to prepare 2.00 liters of 0…

1) Determine % yield of aspirin 2) compared the melting point of the crude and t

1) Determine % yield of aspirin 2) compared the melting point of the crude and the recrystallized aspirin with the theoretical melting point . a) Determine the % error. AaBbCcl Aa…

1) Determine a pH at which pH more than 99% of CH3COOH will be in a form that po

1) Determine a pH at which pH more than 99% of CH3COOH will be in a form that possesses a charge. (The pKa of CH3COOH is 4.76) 2) Determine a pH at which pH more than 99% of CH3NH…

1) Determine how the following error would affect calculated the percent yield o

1) Determine how the following error would affect calculated the percent yield of alum. (increase, decrease, no effect). Briefly explain. 1a. The Aluminum foil did not completely …

1) Determine the empirical formula of a compound that is 85.63 percent C and 14.

1) Determine the empirical formula of a compound that is 85.63 percent C and 14.37 percent H by mass. 2) Fermentation is a complex chemical process of wine making in which glucose…

1) Determine the grams of the cation present in each of the following compounds.

1) Determine the grams of the cation present in each of the following compounds. Show all work and place your answers in the space provided. i) (1) 3.45 grams of Ca3(PO4)2 (2) 28.…

1) Determine the grams of the cation present in each of the following compounds.

1) Determine the grams of the cation present in each of the following compounds. Show all work and place your answers in the space provided. i) (1) 3.45 grams of Ca3(PO4)2 (2) 28.…

1) Determine the molar solubility of BaF2 in pure water. Ksp for BaF2 = 2.45 x 1

1) Determine the molar solubility of BaF2 in pure water. Ksp for BaF2 = 2.45 x 10^-5. 2) Define buffer capacity. Buffer capacity is the amount of acid or base that can be added to…

1) Determine the number of moles of Br2 in a sample consisting of: 8.02×1022 Br2

1) Determine the number of moles of Br2 in a sample consisting of: 8.02×1022 Br2 molecules 2.23×1024 Br atoms 11.0 kg bromine Determine the mass percent H in the hydrocarbon isope…

1) Determine the pH of the solution (to 2 decimal points) after the addition of

1)Determine the pH of the solution (to 2 decimal points) after the addition of 7.31 mL of 0.0123 M barium hydroxide (Ba(OH)2) to 93.9 mL of 0.0578 M sodium dihydrogen phosphate (N…

1) Determine the potential of a platinum electrode (vs. SHE) when placed in the

1) Determine the potential of a platinum electrode (vs. SHE) when placed in the following solutions at 25°C. A mixture of 0.0141 M potassium permanganate (KMnO4) and 0.0489 M mang…

1) Determine the value of Kc for the following reaction if the equilibrium conce

1) Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [P4O10]eq = 2.000 moles, [P4]eq = 3.000 moles, [O2]eq = 4.000 M P4O10(s) …

1) Determine the volume (in mL) of 0.539 M nitric acid (HNO 3 ) that must be add

1) Determine the volume (in mL) of 0.539 M nitric acid (HNO3) that must be added to 99.2 mL of 0.0403 M ammonia (NH3) to yield a pH of 8.49.   Assume the 5% approximation is valid…

1) Diffusion Through a Film: (40 points) Hydrochloric acid (HCI) diffuses throug

1) Diffusion Through a Film: (40 points) Hydrochloric acid (HCI) diffuses through a thin film of water (2.0 mm thick) at 290 K The concentration of HCl at point l on one boundary …

1) Dilute your sample again.. For r malachite green: take 5 ml and dilute to 250

1) Dilute your sample again.. For r malachite green: take 5 ml and dilute to 250 mL with a second volumetric flask or crystal violet: take 5 ml and dilute to 100 ml with a second …

1) Dilute your sample again.. For r malachite green: take 5 ml and dilute to 250

1) Dilute your sample again.. For r malachite green: take 5 ml and dilute to 250 mL with a second volumetric flask or crystal violet: take 5 ml and dilute to 100 ml with a second …

1) Diluting Concentrated Nitric Acid Calculate the volume of 15 M Nitric acid re

1) Diluting Concentrated Nitric Acid Calculate the volume of 15 M Nitric acid required to make 250 mL of 1.2 M nitric acid. a) Volume of 15 M Nitric acid required ______________ m…

1) Diluting Concentrated Nitric Acid Calculate the volume of 15 M Nitric acid re

1) Diluting Concentrated Nitric Acid Calculate the volume of 15 M Nitric acid required to make 250 mL of 1.2 M nitric acid. a) Volume of 15 M Nitric acid required ____20__________…

1) Discuss how the change in hardware and labor costs from the 1960s and to the

1) Discuss how the change in hardware and labor costs from the 1960s and to the present day have resulted in the evolution of computers from batch-processing main-frame systems to…

1) Discuss the different types of Fatty Acids (FA’s) that we discussed in class

1) Discuss the different types of Fatty Acids (FA’s) that we discussed in class (i.e., saturated, MUFA and     PUFA). A) Describe a Micelle (you should know what this is!) contain…

1) Display a trace of the intermediate values for M and N for Ackermann function

1) Display a trace of the intermediate values for M and N for Ackermann function when M = 2, N = 2, and for M = 3, N = 2. A trace of Ackermann's function for M = 3, N = 2, require…

1) Does the graph of the data points show the Beer\'s Law is obeyed? 2) Does Abs

1) Does the graph of the data points show the Beer's Law is obeyed? 2) Does Absorbance or Transmitance give a linear relationship to concentration? Can someone please help me answ…

1) During exercise, skeletal muscle glycogenolysis can be activated by all of th

1) During exercise, skeletal muscle glycogenolysis can be activated by all of the following EXCEPT: a) insulin mediated increase in phosphatase activity b) epinephrine mediated in…

1) During the distillation process at the end of procedure 1, why did the produc

1) During the distillation process at the end of procedure 1, why did the product remaining in the distilling flask? The product has a higher melting point than the melting point …