Chemistry concepts and calculations

1. K m value changes with substrate.The active site of Chymotrysin best accommod

1. Km value changes with substrate.The active site of Chymotrysin best accommodates substrates with a bulky hydrophobic or aromatic residue contributing carbonyl group to peptide …

1. Labe el each compound as soluble or insoluble (2 points) a. CuS b. FeSO4 c. P

1. Labe el each compound as soluble or insoluble (2 points) a. CuS b. FeSO4 c. PbCO 2. Circle which one of these reactions results in the formation of a precipitate. Write the pre…

1. Label each of the following as Arrhenius acid, Arrhenius base, salt, or molec

1. Label each of the following as Arrhenius acid, Arrhenius base, salt, or molecular compound. HCl NaOH HC2H3O2 MgCl2 H2O CCl4 Mg(OH)2 2. Which of the following could be considere…

1. Label the acid and the base, and the conjugate pairs for this reaction. HCO2H

1. Label the acid and the base, and the conjugate pairs for this reaction. HCO2H+H2O-----> CO2H+H3O 2. Calculate the pH of a 0.25 mol/L solution of magnesium hydroxide. 3. A ti…

1. Label the acid and the base, and the conjugate pairs for this reaction. HCO2H

1. Label the acid and the base, and the conjugate pairs for this reaction. HCO2H+H2O-----> CO2H+H3O 2. Calculate the pH of a 0.25 mol/L solution of magnesium hydroxide. 3. A ti…

1. Label the gas phase, the liquid phase, and the solid phase. 2. Label the trip

1. Label the gas phase, the liquid phase, and the solid phase. 2. Label the triple point and define triple point. 3. Define critical pressure. 4. If the temperature remains consta…

1. Label the gas phase, the liquid phase, and the solid phase. 2. Label the trip

1. Label the gas phase, the liquid phase, and the solid phase. 2. Label the triple point and define triple point. 3. Define critical pressure. 4. If the temperature remains consta…

1. Lactic acid is a carboxylic acid with a Ka = 8.3 x 10-4. Calculate the pH of

1. Lactic acid is a carboxylic acid with a Ka = 8.3 x 10-4. Calculate the pH of a 1.000 L solution of 0.200 M lactic acid. 2. From the Lactic acid question above: How would the pH…

1. Larry\'s doctor orders an esophageal pH test in which the amount of acid ente

1. Larry's doctor orders an esophageal pH test in which the amount of acid entering the esophagus from the stomach is measured over 24 h. A probe that measures the pH is inserted …

1. Last week CHM 375 students distilled their crude cyclohexene product mixtures

1. Last week CHM 375 students distilled their crude cyclohexene product mixtures a pure (Exp. F) in hopes of isolating a sample cyclohexene. Final products were analyzed by IR spe…

1. Lead (II) nitrate and sodium iodide react to form sodium nitrate and lead (II

1. Lead (II) nitrate and sodium iodide react to form sodium nitrate and lead (II) iodide. Pb(NO3)2 + NaI --> NaNO3 + PbI2 A)    Balance the equation. B)    Name the type of rea…

1. Lead crystallizes in a face-centered cubic unit cell with an edge length of 4

1. Lead crystallizes in a face-centered cubic unit cell with an edge length of 495 pm. What is the radius of a lead atom in picometers? What is the density of lead in g/cm3? 2. Al…

1. Lecturer java code to answer the question ***********************************

1. Lecturer java code to answer the question ****************************************** public class Lecturer { private String firstName ;     private String familyName ;     priv…

1. Let M be the set {Neo, Morpheus, Trinity}. Give three dierent partitions of M

1. Let M be the set {Neo, Morpheus, Trinity}. Give three dierent partitions of M. 2. Let C be the set { Gimli, Gandalf, Sauron, Saruman, Frodo }. Let T be an endorelation on the s…

1. Let q be a stack. Consider the following program: q.enqueue(1); q.enqueue(2);

1. Let q be a stack. Consider the following program: q.enqueue(1); q.enqueue(2); q.dequeue(); q.enqueue(3); q.enqueue(4); q.dequeue(); int x = q.getFront(); What is the value disp…

1. Let\'s compare two compounds of similar molar mass in which A is comprised of

1. Let's compare two compounds of similar molar mass in which A is comprised of nonpolar molecules and B composed of polar molecules. Which of the following statements is true? 2.…

1. Let\'s say you hold some ice in your hand. The ice melts and your hand feels

1. Let's say you hold some ice in your hand. The ice melts and your hand feels cold. The reaction of H2O(s) H2O(l) is ___________(endothermic/exothermic?). The change in enthalpy …

1. Let’s say an 80 kg pole vaulter can run 10 m/s. How high can she vault? (Assu

1. Let’s say an 80 kg pole vaulter can run 10 m/s. How high can she vault? (Assuming no “spring-like” action in his pole.) We are taking her kinetic energy and converting it to po…

1. Let’s talk septets for awhile. You’ve already seen one, in the proton spectru

1. Let’s talk septets for awhile. You’ve already seen one, in the proton spectrum of something as simple as 2-propanol. a. Sketch the molecule and briefly explain where the septet…

1. Light with a wavelength of 589 nm illuminates two narrow slits. A fringe spac

1. Light with a wavelength of 589 nm illuminates two narrow slits. A fringe spacing of 4.0 mm is on a screen 150 cm behind the slits. What is the spacing between the two slits? 2.…

1. Light with a wavelength of 800 nm has an energy of (a) 2.48 x 10 19 J. (b) 2.

1. Light with a wavelength of 800 nm has an energy of (a) 2.48 x 10 19 J. (b) 2.48 x 10 28 J. (c) 5.30 x 10 31 J. 2. Light with a frequency of 1.07 x 1015 Hz has a wavenumber (in …

1. Linked list queue. Modify the LinkedQueue data structure (LinkedQueue.java) b

1. Linked list queue. Modify the LinkedQueue data structure (LinkedQueue.java) by adding the following methods. • void reverse() - This method reverses the order of the linked lis…

1. Liquid Plumber, a drain cleaner, has a pH of 14.32. What is the pOH of this s

1. Liquid Plumber, a drain cleaner, has a pH of 14.32. What is the pOH of this solution and what is the hydroxide ion concentration?answer  pOH -0.33 [OH^+]2.1M 2. A solution is m…

1. Liquid carbon tetrachloride has a density of 1.59 g/mL. A barometer is constr

1. Liquid carbon tetrachloride has a density of 1.59 g/mL. A barometer is constructed using carbon tetrachloride instead of mercury. If the atmospheric pressure is0.972 atm, what …

1. List all of the chemicals you will use for this week\'s experiment. For each

1. List all of the chemicals you will use for this week's experiment. For each chemical, list specitic safety precaution(s) that must be followed. In order to find specific safety…

1. List all the anions in this lab that are identified using: A. precipitation r

1. List all the anions in this lab that are identified using: A. precipitation reactions B. redox reactions C. acid-base reactions D. gas-forming reactions The Equations Given: Ca…

1. List all the strong aqueous acids. What is the difference between a strong ac

1. List all the strong aqueous acids. What is the difference between a strong acid and a weak acid? How do the concentrations of the strong and weak acids compare to the H3O+ in s…

1. List all the strong aqueous acids. What is the difference between a strong ac

1. List all the strong aqueous acids. What is the difference between a strong acid and a weak acid? How do the concentrations of the strong and weak acids compare to the H3O+ in s…

1. List all types of IMFs that would occur in each of the following and circle t

1. List all types of IMFs that would occur in each of the following and circle the strongest force present. a. CHiCF b. CCl d. NaBr c. O2 e. (CHs)sN 2. Rank the following compound…

1. List the 3 mechanisms cells use to generate ATP. Which mechanism is used in g

1. List the 3 mechanisms cells use to generate ATP. Which mechanism is used in glycolysis? 2. What are the 3 major steps of cellular respiration? 3. What are the 2 main stages of …

1. List the chemicals youwill use for the hands-on portion of this week\'s labex

1.   List the chemicals youwill use for the hands-on portion of this week's labexperiment. For each chemical, list specific safetyprecaution(s) that must be followed. Fill in the …

1. List the compound(s) that gave a positive reaction with CrO3. What type of re

1. List the compound(s) that gave a positive reaction with CrO3. What type of reaction did these compounds undergo? What type of reagent is CrO3? Propose a possible product from t…

1. List the elements of the 3 rd period of the Periodic Table (excluding transit

1.      List the elements of the 3rd period of the Periodic Table (excluding transition metals) in the exact order of increasing first ionization energy. 2.      List the elements…

1. List the six strong acids-name and chemical formula 2. List the six strong ba

1. List the six strong acids-name and chemical formula 2. List the six strong bases-name and chemical formula Write the neutralization reaction involving lithium hydroxide (LiOH) …

1. List the types and amounts (volume %) of the four most abundant gases in the

1. List the types and amounts (volume %) of the four most abundant gases in the atmosphere, excluding water. Use these percentages to calculate the partial pressure in atmospheres…

1. Lithium aluminum hydride is an important reagent in organic chemistry. You ar

1. Lithium aluminum hydride is an important reagent in organic chemistry. You are shipping 500 g of LiAlH4in ether (ethereal). Which of the following statements is true? a)Accordi…

1. Lithium hydrogen carbonate decomposes by heat; the reaction is represented by

1. Lithium hydrogen carbonate decomposes by heat; the reaction is represented by the balanced equation: 2LiHCO3 (s) --------> Li2CO3(s) + CO2(g) + H20 (g) a.) If 0.24 mol of Li…

1. Lithium hydrogen carbonate decomposes by heat; the reaction is represented by

1. Lithium hydrogen carbonate decomposes by heat; the reaction is represented by the balanced equation: 2LiHCO3 (s) --------> Li2CO3(s) + CO2(g) + H20 (g) a.) If 0.24 mol of Li…

1. Lithium hydrogen carbonate decomposes by heat; the reaction is represented by

1. Lithium hydrogen carbonate decomposes by heat; the reaction is represented by the balanced equation: 2LiHCO3 (s) --------> Li2CO3(s) + CO2(g) + H20 (g) a.) If 0.24 mol of Li…

1. Liver pyruvate kinase is activated by dephosphorylation in response to glucag

1. Liver pyruvate kinase is activated by dephosphorylation in response to glucagon. answer true or false 2. Glycolysis is regulated primarily by: (only one answer for number 2) 3.…

1. Look again at the Lewis structures that you drew in questions 1 through 9 of

1. Look again at the Lewis structures that you drew in questions 1 through 9 of this homework assignment and determine which of them exhibit resonance. (In other words, which of t…

1. Look again at the Lewis structures that you drew in questions 1 through 9 of

1. Look again at the Lewis structures that you drew in questions 1 through 9 of this homework assignment and determine which of them exhibit resonance. (In other words, which of t…

1. Look at Figure 2 and discuss with your group how changes in retention time an

1. Look at Figure 2 and discuss with your group how changes in retention time and the broadness of peaks A and B would in uence Rs. Write a summary of your group consensus below. …

1. Look at the % deviation section of the calculations table. Choose the two sam

1. Look at the % deviation section of the calculations table. Choose the two samples with the least % deviation. Write the values from the table for the [SCN-]eq for these two: __…

1. Look at the list of ingredients on an item you have in your home for the name

1. Look at the list of ingredients on an item you have in your home for the name of an organic compound that interests you. I strongly encourage you to look up the compound you ar…

1. Look at the procedure below. At the time of mixing, what are the nominal conc

1. Look at the procedure below. At the time of mixing, what are the nominal concentrations of H2O2 and S2O32- in the reaction mixture prepared in step 1 of the procedure? Assume t…

1. Look up the temperatures of the known phase transitions for trans-stilbene, a

1. Look up the temperatures of the known phase transitions for trans-stilbene, ammonium chloride, and p-azoxyanisole that fall in the temperature range 0-200 celsius. 2. The sampl…

1. Look up the temperatures of the known phase transitions for trans-stilbene, a

1. Look up the temperatures of the known phase transitions for trans-stilbene, ammonium chloride, and p-azoxyanisole that fall in the temperature range 0-200 celsius. 2. The sampl…

1. Look up the term ‘serial dilutions’ in a textbook or web source and explain i

1. Look up the term ‘serial dilutions’ in a textbook or web source and explain it in your own words. (1 points) Serial Dilution is a dilution process where you have a stock concen…

1. Magnesium carbonate, MgCO3, has a Ksp value of 6.80 x 1-^126. What happens wh

1. Magnesium carbonate, MgCO3, has a Ksp value of 6.80 x 1-^126. What happens when magnesium and carbonate solutions are mixed to give 2.50 x 10^123 M Mg^2+ and 2.00 x 10^123 M CO…