Chemistry concepts and calculations

You are in charge of an IT convention. The event organizers are expecting a grou

You are in charge of an IT convention. The event organizers are expecting a group of students to come compete at a College IT security design competition. There will be students f…

You are in charge of an IT convention. The event organizers are expecting a grou

You are in charge of an IT convention. The event organizers are expecting a group of students to come compete at a College IT security design competition. There will be students f…

You are in charge of the forensic crime laboratory in a large city. The mayor of

You are in charge of the forensic crime laboratory in a large city. The mayor of that city has just received an envelope containing an unknown powder. It could be harmless (e.g. b…

You are in outer space where there is no gravity. You tie a cork to the end of a

You are in outer space where there is no gravity. You tie a cork to the end of a string and whirl it around in a circle with a constant angular velocity. Which statement is FALSE?…

You are in the kitchen. You have a party later today and want to make some straw

You are in the kitchen. You have a party later today and want to make some strawberry gelatin. Your mom comes home from a long day at work and hands you two bottles. They both con…

You are in the kitchen. You have a party later today and want to make some straw

You are in the kitchen. You have a party later today and want to make some strawberry gelatin. Your mom comes home from a long day at work and hands you two bottles. They both con…

You are in the lab and performing a TLC experiment. Unfortunately, you were so i

You are in the lab and performing a TLC experiment. Unfortunately, you were so involved in carrying out a melting point determination that you didn't notice that the solvent front…

You are in the rental car business. Create a class called RentalCar that include

You are in the rental car business. Create a class called RentalCar that includes a string type for the car type (e.g., passenger car, van, truck, etc.) and a double field for the…

You are instructed to create 100. mL of a 0.47 M phosphate buffer with a pH of 7

You are instructed to create 100. mL of a 0.47 M phosphate buffer with a pH of 7.6. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. (Enter al…

You are instructed to create 180. mL of a 0.12 M Acetate buffer with a pH of 4.3

You are instructed to create 180. mL of a 0.12 M Acetate buffer with a pH of 4.3. You have Acetic acid and the sodium salt NaC2H3O2, available. (Enter all numerical answers to thr…

You are instructed to create 190. mL of a 0.13 M Acetate buffer with a pH of 4.1

You are instructed to create 190. mL of a 0.13 M Acetate buffer with a pH of 4.1. You have Acetic acid and the sodium salt NaC2H3O2, available. (Enter all numerical answers to thr…

You are instructed to create 200. mL of a 0.63 M phosphate buffer with a pH of 6

You are instructed to create 200. mL of a 0.63 M phosphate buffer with a pH of 6.0. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. (Enter al…

You are instructed to create 300. mL of a 0.27 M phosphate buffer with a pH of 7

You are instructed to create 300. mL of a 0.27 M phosphate buffer with a pH of 7.2. You have phosphoric acid and the sodium salts NaH_2PO_4, Na_2HPO_4, and Na_3PO_4 available. H_3…

You are instructed to create 300. mL of a 0.28 M Acetate buffer with a pH of 5.1

You are instructed to create 300. mL of a 0.28 M Acetate buffer with a pH of 5.1. You have Acetic acid and the sodium salt NaC_2H_3O_2, available. (Enter all numerical answers to …

You are instructed to create 300. mL of a 0.34 M phosphate buffer with a pH of 7

You are instructed to create 300. mL of a 0.34 M phosphate buffer with a pH of 7.3. NaH2PO4 is the acid component of the buffer. Na2HPO4 is the base component of your buffer. What…

You are instructed to create 400. mL of a 0.31 M phosphate buffer with a pH of 7

You are instructed to create 400. mL of a 0.31 M phosphate buffer with a pH of 7.2. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. (Enter al…

You are instructed to create 50.0 mL of a 0.44 M Acetate buffer with a pH of 5.5

You are instructed to create 50.0 mL of a 0.44 M Acetate buffer with a pH of 5.5. You have Acetic acid and the sodium salt NaC2H302, available. (Enter all numerical answers to thr…

You are instructed to create 50.0 mL of a 0.66 M Acetate buffer with a pH of 5.0

You are instructed to create 50.0 mL of a 0.66 M Acetate buffer with a pH of 5.0. You have Acetic acid and the sodium salt NaC2H3O2, available. (Enter all numerical answers to thr…

You are instructed to create 500. mL of a 0.65 M phosphate buffer with a pH of 7

You are instructed to create 500. mL of a 0.65 M phosphate buffer with a pH of 7.2. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4available. (Enter all…

You are instructed to create 500. ml_ of a 0.47 M phosphate buffer with a pH of

You are instructed to create 500. ml_ of a 0.47 M phosphate buffer with a pH of 7.6. You have phosphoric acid and the sodium salts NaH_2PO_4, Na_2HPO_4, and Na_3PO_4 available. (E…

You are instructed to create 700. mL of a 0.40 M phosphate buffer with a pH of 7

You are instructed to create 700. mL of a 0.40 M phosphate buffer with a pH of 7.3. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. (Enter al…

You are instructed to create 800. mL of a 0.66 M phosphate buffer with a pH of 6

You are instructed to create 800. mL of a 0.66 M phosphate buffer with a pH of 6.9. You have phosphoric acid and the sodium salts NaH2PO4 Na2HPO4, and Na3PO4 available. (Enter all…

You are instructed to create 800. mL of a 0.74 M phosphate buffer with a pH of 7

You are instructed to create 800. mL of a 0.74 M phosphate buffer with a pH of 7.1. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available Na2HPO4 = …

You are instructed to create 900. mL of a 0.47 M phosphate buffer with a pH of 6

You are instructed to create 900. mL of a 0.47 M phosphate buffer with a pH of 6.7. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. Ka1 = 6.9…

You are instructed to create 900. mL of a 0.47 M phosphate buffer with a pH of 6

You are instructed to create 900. mL of a 0.47 M phosphate buffer with a pH of 6.7. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4available. (Enter all…

You are interested in a simple reaction: Stoichiometry: A rightarrow B Mechanism

You are interested in a simple reaction: Stoichiometry: A rightarrow B Mechanism: A rightarrow I step 1, k_1 I rightarrow A step 2, k_2 I rightarrow B step 3, k_3 a) Under what sp…

You are interested in bacterial cell cycle control and you have noticed that one

You are interested in bacterial cell cycle control and you have noticed that one particular strain of bacteria can adjust its cell cycle based on temperature in a much more sensit…

You are interested in bacterial cell cycle control and you have noticed that one

You are interested in bacterial cell cycle control and you have noticed that one particular strain of bacteria can adjust its cell cycle based on temperature in a much more sensit…

You are interested in bacterial cell cycle control and you have noticed that one

You are interested in bacterial cell cycle control and you have noticed that one particular strain of bacteria can adjust its cell cycle based on temperature in a much more sensit…

You are interested in bacterial cell cycle control and you have noticed that one

You are interested in bacterial cell cycle control and you have noticed that one particular strain of bacteria can adjust its cell cycle based on temperature in a much more sensit…

You are interested in determining the standard enthalpy of formation of the comp

You are interested in determining the standard enthalpy of formation of the compound called bis(benzene)chromium [Cr(C6H6)2 (s)] at 583 K. Through the use of a calorimeter, it was…

You are interested in determining the standard enthalpy of formation of the comp

You are interested in determining the standard enthalpy of formation of the compound called bis(benzene)chromium [Cr(C6H6)2 (s)] at 583 K. Through the use of a calorimeter, it was…

You are interested in receptor protein-tyrosine kinases and you are purifying a

You are interested in receptor protein-tyrosine kinases and you are purifying a novel phosphotyrosine-binding protein [NPBP-1]. In order to characterize this protein you need to s…

You are locked in a (5 meters long, 5 meters wide, 5 meters high) room with no o

You are locked in a (5 meters long, 5 meters wide, 5 meters high) room with no oxygen air flow into the room. How long can your survive in this room (5 meters long, 5 meters wide,…

You are looking at a thermometer that has a mark for each degree. You are going

You are looking at a thermometer that has a mark for each degree. You are going to write down a number corresponding to the temperature. How will you decide how many significant f…

You are making 2 L of a formic acid (HCOOH) sodium formate (HCOONa) buffer solut

You are making 2 L of a formic acid (HCOOH) sodium formate (HCOONa) buffer solution with a pH of 3.7. At your disposition you have: A sodium formate powder A solution that is 99% …

You are making sandwiches again. This time, one double-decker sandwich consists

You are making sandwiches again. This time, one double-decker sandwich consists of 3 slices of bread, 2 chicken slices, and 4 tomato slices. Suppose that you have 3.15 kg of slice…

You are managing a city that has lead in the drinking water service lines. You w

You are managing a city that has lead in the drinking water service lines. You want to use phosphate (PO43-) as a means to control lead corrosion through the formation of lead pho…

You are measuring Ca2+ in drinking water using an ISE. You diluted 1 mL of the d

You are measuring Ca2+ in drinking water using an ISE. You diluted 1 mL of the drinking water with 19 mL ddH2O. You have standards of Ca2+ in ddH2O. You add 1 mL of a commercial I…

You are measuring Ca2+ in drinking water using an ISE. You diluted 1 mL of the d

You are measuring Ca2+ in drinking water using an ISE. You diluted 1 mL of the drinking water with 19 mL ddH2O. You have standards of Ca2+ in ddH2O. You add 1 mL of a commercial I…

You are measuring lycopene in samples of tomato sauce. You extract a 2.1 mL samp

You are measuring lycopene in samples of tomato sauce. You extract a 2.1 mL sample of tomato sauce 3X with 5 mL hexane. You pool the extracts and bring to a final volume of 25 mL …

You are measuring lycopene in samples of tomato sauce. You extract a 2.1 mL samp

You are measuring lycopene in samples of tomato sauce. You extract a 2.1 mL sample of tomato sauce 3X with 5 mL hexane. You pool the extracts and bring to a final volume of 25 mL …

You are measuring mercury (Hg) in peanut butter. You prepare a stock solution of

You are measuring mercury (Hg) in peanut butter. You prepare a stock solution of 10 ppb Hg in ddH2O and then prepare a standard curve as follows: Std Solution mL Hg Stock mL ddH2O…

You are measuring the pectin content in strawberry jam. You homogenize 5.19 g ja

You are measuring the pectin content in strawberry jam. You homogenize 5.19 g jam in 25 mL water and then digest with ?-amylase, glucoamylase and protease. You extract the digest …

You are mixing \"fruit punch\" for a chemistry party (hence the metric system).

You are mixing "fruit punch" for a chemistry party (hence the metric system). Each bowl of fruit punch must contain exactly 2.5 L of pineapple juice, 3.5 L of orange juice, and 75…

You are mixing \"fruit punch\" for a chemistry party (hence the metric system).

You are mixing "fruit punch" for a chemistry party (hence the metric system). Each bowl of fruit punch must contain exactly 2.5 L of pineapple juice, 3.5 L of orange juice, and 75…

You are monitoring air quality for your city and around noontime you measure NO2

You are monitoring air quality for your city and around noontime you measure NO2 and NO concentrations of 38.2 and 4.6 ppbv, respectively. Neglecting hydrocarbons and assuming the…

You are now the chemist responsible for describing the efficiency of a newly pro

You are now the chemist responsible for describing the efficiency of a newly produced GC column that is 25 meters long. You do this by injecting an aliquot of an octadecane standa…

You are on a battlefield where the enemy ranks have established n bases. A recen

You are on a battlefield where the enemy ranks have established n bases. A recent wave of spies infiltrated the bases and were able to radio back some information about the enemy …

You are on a cruise ship travelling north at a speed of 9 m/s with respect to la

You are on a cruise ship travelling north at a speed of 9 m/s with respect to land. If you walk north toward the front of the ship, with a speed of 2.7 with respect to the ship, w…