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Chemistry concepts and calculations

117302 questions • Page 2115 / 2347

You are given 60 mL of 0.50 M acetic acid/ acetate buffer to test. The starting
You are given 60 mL of 0.50 M acetic acid/ acetate buffer to test. The starting composition of the two major species are: Concentration of CH3COOH: 0.300 M Concentration of CH3COO…
You are given 60 mL of 0.50 M acetic acid/ acetate buffer to test. The starting
You are given 60 mL of 0.50 M acetic acid/ acetate buffer to test. The starting composition of the two major species are: Concentration of CH3COOH: 0.300 M Concentration of CH3COO…
You are given 60 ml of 0.50 M acetic acid/acetate buffer to test. The starting c
You are given 60 ml of 0.50 M acetic acid/acetate buffer to test. The starting composition of the two major species are: Concentration of CH3COOH is 0.300 M, Concentration of CH3C…
You are given a 10.0-gram mixture of KOH and Ba(OH) 2 . Both are colorless ionic
You are given a 10.0-gram mixture of KOH and Ba(OH)2. Both are colorless ionic solids that are soluble in water. You dissolve this mixture in 250.0 mL of water and titrate with 1.…
You are given a beaker of an aqueous solution in which an organic compound has b
You are given a beaker of an aqueous solution in which an organic compound has been dissolved. With the aid of pH paper, you estimate that the solution has a pH of 3. Which of the…
You are given a beaker of an aqueous solution in which an organic compound has b
You are given a beaker of an aqueous solution in which an organic compound has been dissolved. With the aid of pH paper, you estimate that the solution has a pH of 3. Which of the…
You are given a bottle of an organic liquid and told it must be either cyclohexa
You are given a bottle of an organic liquid and told it must be either cyclohexane or l-hexane. Which of the following statements is (are) true about these two compounds? The two …
You are given a container in which H2 (g), N2 (g), and NH3 (g) are in equilibriu
You are given a container in which H2 (g), N2 (g), and NH3 (g) are in equilibrium with each other at 120 C. Answer the following questions given that the formation of ammonia is e…
You are given a deck of cards with the jokers removed. a) You draw one card from
You are given a deck of cards with the jokers removed. a) You draw one card from the deck. What is the probability that it is a heart? b) The card turns out to be the jack of diam…
You are given a directed graph G = (V, E) representing some financial choices. E
You are given a directed graph G = (V, E) representing some financial choices. Each edge (u, v) epsilon E has a weight w(u, v), where w(u, v) > 0 represents a cost, and w(u, v)…
You are given a drug compound stock solution with a concentration of 5 mM. You n
You are given a drug compound stock solution with a concentration of 5 mM. You need to prepare a dilution series in which you cover the range between approximately 200.0 pM and 1.…
You are given a java file HW2.java with preexisting arrays and functions. Do not
You are given a java file HW2.java with preexisting arrays and functions. Do not modify the main function or other functions names .Each function are given a certain implementatio…
You are given a light brown solid sample with the information that it is an impu
You are given a light brown solid sample with the information that it is an impure sample of an aromatic hydrocarbon– you are tasked with its purification. You ask for information…
You are given a light brown solid sample with the information that it is an impu
You are given a light brown solid sample with the information that it is an impure sample of a phenol – you are tasked with its purification. You ask for information about the sus…
You are given a list of n integers. Design an algorithm that returns the number
You are given a list of n integers. Design an algorithm that returns the number of pairs of duplicates in this list. For example, if the list is (13,3,8,3,13,7,13,9,13), then the …
You are given a list of students’ names and their test scores. *Write a program
You are given a list of students’ names and their test scores. *Write a program that does the following*: ( Must be C++ language) a. Calculates the average test scores. b. Determi…
You are given a mixture containing 2 compounds: A and B. Both compounds have a s
You are given a mixture containing 2 compounds: A and B. Both compounds have a solubility of 1 g/100 mL of solvent at 20 degrees celsius and 16 g/ 100 mLof solvent at 100 degrees …
You are given a mixture containing two compounds, A and B. Both compounds have a
You are given a mixture containing two compounds, A and B. Both compounds have a solubility of 1 g/ 100 mL of solvent at 20 °C and 16 g/ 100 mL of solvent at 100 °C. The sample is…
You are given a mixture of liquids in the lab. You are told that they have very
You are given a mixture of liquids in the lab. You are told that they have very close boiling points. What technique would you use to purify it? True or False, in the laboratory, …
You are given a mixture of liquids in the lab. You are told that they have very
You are given a mixture of liquids in the lab. You are told that they have very close boiling points. What technique would you use to purify it? True or False, in the laboratory, …
You are given a mixture of the following amino acids: as[artate, histidine, vali
You are given a mixture of the following amino acids: as[artate, histidine, valine, and argininie. Design an ion-exchange chromatography experiment that will allow you to effectiv…
You are given a mixture of the following amino acids: as[artate, histidine, vali
You are given a mixture of the following amino acids: as[artate, histidine, valine, and argininie. Design an ion-exchange chromatography experiment that will allow you to effectiv…
You are given a mixture of three compounds: phenanthrene (0.25 g), 1,4-dibromobe
You are given a mixture of three compounds: phenanthrene (0.25 g), 1,4-dibromobenzene (0.05 g) and 4-aminoacetophenone (0.20 g). The mixture can be dissolved in either diethyl eth…
You are given a mixture of two enantiomers (C6H12) in lab and are told to do a r
You are given a mixture of two enantiomers (C6H12) in lab and are told to do a reaction with them. The reaction is a catalytic hydrogenation. You isolate a single chiral product. …
You are given a price list in the form of a list of 2-element tuples, where each
You are given a price list in the form of a list of 2-element tuples, where each tuple corresponds to a different product. The first element in each tuple is a string correspondin…
You are given a protein solution with a concentration of 0.25 mg/ml. 1. You need
You are given a protein solution with a concentration of 0.25 mg/ml. 1. You needs 100 ug of protein for an experiment. What volume of the protein solution do you need? 2. Suppose …
You are given a pure protein sample to characterize and provided the following i
You are given a pure protein sample to characterize and provided the following information: Its molar extinction coefficient, epsilon280, is 0.30 liters micromole-1 cm-1 Its Delta…
You are given a pure protein sample to characterize and provided the following i
You are given a pure protein sample to characterize and provided the following information: Its molar extinction coefficient, epsilon280, is 0.30 liters micromole-1 cm-1 Its Delta…
You are given a quantity of a volatile (easily vaporized) liquid substance and a
You are given a quantity of a volatile (easily vaporized) liquid substance and asked to determine its molecular weight. To do that, you place a sample of the liquid in a 200.0 mL …
You are given a sample containing NaCl ( aq ) and NaBr ( aq ), both with concent
You are given a sample containing NaCl (aq) and NaBr (aq), both with concentrations of 0.020 M. Some of the figures below represent a series of snapshots of what molecular-level v…
You are given a sample of several compounds to separate by paper chromatography.
You are given a sample of several compounds to separate by paper chromatography. You draw a pencil line exactly 1.0 cm from the bottom of the paper, and place a spot of sample on …
You are given a sample of several compounds to separate by paper chromatography.
You are given a sample of several compounds to separate by paper chromatography. You draw a pencil line exactly 1.0 cm from the bottom of the paper, and place a spot of sample on …
You are given a sample of several compounds to separate by paper chromatography.
You are given a sample of several compounds to separate by paper chromatography. You draw a pencil line exactly 1.0 cm from the bottom of the paper, and place a spot of sample on …
You are given a sample of several compounds to separate by paper chromatography.
You are given a sample of several compounds to separate by paper chromatography. You draw a pencil line exactly 1.0 cm from the bottom of the paper, and place a spot of sample on …
You are given a sample of several compounds to separate by paper chromatography.
You are given a sample of several compounds to separate by paper chromatography. You draw a pencil line exactly 1.0 cm from the bottom of the paper, and place a spot of sample on …
You are given a sample that has 1.3 mg/ml of purified protein. The molecular wei
You are given a sample that has 1.3 mg/ml of purified protein. The molecular weight is 37,000 Daltons. a) the absorbance in a 1cm cuvette is 0.93. calculate the molar extinction c…
You are given a sequence a1, a2, ..., aN. Find the smallest possible value of ai
You are given a sequence a1, a2, ..., aN. Find the smallest possible value of ai + aj, where 1 <= i < j <= N. Input The first line of the input contains an integer T deno…
You are given a series of mathematical operations to perform and make a table in
You are given a series of mathematical operations to perform and make a table including the calculated value as displayed on your calculator: Mathematical operation Value displaye…
You are given a small bar of an unknown metal, M. M\' density is 10.5 g/cm qubed
You are given a small bar of an unknown metal, M. M' density is 10.5 g/cm qubed . the edge of the unit cell is 409pm assuming that metal crystallizes in a face-centered cubic (fcc…
You are given a solution of Fe2+ ions, and asked to determine its concentration.
You are given a solution of Fe2+ ions, and asked to determine its concentration. You make a 1.00 M solution of Fe2+. You place an iron electrode in each solution, and you connect …
You are given a solution that is 0.032 in Cu 2+ and 0.032 in Ca 2+ that you wish
You are given a solution that is 0.032 in Cu2+ and 0.032 in Ca2+ that you wish to separate using selective ion precipitation with OH- ions. The Ksp value for Cu(OH)2 = 4.80 X 10-2…
You are given a sorted array of integers. The numbers in the array are pairwise
You are given a sorted array of integers. The numbers in the array are pairwise distinct, namely no value appears more than once. Your goal is to find if there is an index 1 k n s…
You are given a stock solution of 0.1 M, (1) 100-mL volumetric flask; (1) 25-mL
You are given a stock solution of 0.1 M, (1) 100-mL volumetric flask; (1) 25-mL volumetric flask; (1) 5- ml transfer pipet; and (1) 10-mL transfer pipet. What is the final concent…
You are given a student data file which consists of the student\'s name, student
You are given a student data file which consists of the student's name, student ID, and GPA. Data set is provided below: Name ID GPA Alice 8234 2.7 Mark 2672 3.0 Joanne 1234 3.7 J…
You are given a substance that is equally soluble in water and hexane (two immis
You are given a substance that is equally soluble in water and hexane (two immiscible solvents). a.) If you start with 10 g of the substance dissolved in 100mL of water and are gi…
You are given a two-dimensional array of values that give the height of a terrai
You are given a two-dimensional array of values that give the height of a terrain at different points in a square. Write a constructor and a method Then write a program that print…
You are given a unknown white solid to recrystallize in lab. The white solid cou
You are given a unknown white solid to recrystallize in lab. The white solid could be Compound A (melting point 110-112°C), Compound B (melting point 66-68°C) or Compound C (melti…
You are given a vector in the xy plane that has a magnitude of 81.0 units and a
You are given a vector in the xy plane that has a magnitude of 81.0 units and a y component of -56.0 units. What are the two possibilities for its z component? Enter your answers …
You are given a water sample and asked to determine the alkalinity for the sampl
You are given a water sample and asked to determine the alkalinity for the sample. The water is at pH 9 (before you begin titrating with 0.1 N HCl). You perform 3 separate titrati…
You are given a worked wooden item from an archaeological dig believed to date t
You are given a worked wooden item from an archaeological dig believed to date to during the last glaciation. As such, the artifact would be another peice of evience in favor of t…