Chemistry concepts and calculations

You are a researcher for a golf club manufacture. You are given two identical lo

You are a researcher for a golf club manufacture. You are given two identical looking cubes of a metal alley. You are informed that they are made of the same material, but one is …

You are a researcher for a golf club manufacturer. You are given two identical l

You are a researcher for a golf club manufacturer. You are given two identical looking cubes of a metal alloy. You are informed that they are made of the exact same material, but …

You are a scientist working for a paternity testing center. You spent all Friday

You are a scientist working for a paternity testing center. You spent all Friday isolating dsDNA from 100 hair samples from children and their possible dads. In order to get a qui…

You are a spy in a Spy Kid movie. You find yourself locked in a room (V = 60 m 3

You are a spy in a Spy Kid movie. You find yourself locked in a room (V = 60 m3). All of a sudden your watch (which is equipped with a poison gas sensor, among other things) detec…

You are a systems analyst at NY Cooling Inc., a leading manufacturer of air cond

You are a systems analyst at NY Cooling Inc., a leading manufacturer of air conditioning units. You are team leader of a team that is developing a new equipment checkout system. T…

You are a technician at the local water analysis company Aquate, LLC and your gr

You are a technician at the local water analysis company Aquate, LLC and your group is asked to develop a method for analysis of phosphate in water samples. When phosphates enter …

You are about to perform some intricate electrical studies on signal skeletal mu

You are about to perform some intricate electrical studies on signal skeletal muscle fibers from a gastronemius muscle. But first, you must prepare 6L of a 170 mM NaCL solution in…

You are about to perform some intricate electrical studies on signal skeletal mu

You are about to perform some intricate electrical studies on signal skeletal muscle fibers from a gastronemius muscle. But first, you must prepare 6L of a 170 mM NaCL solution in…

You are about to perform some intricate electrical studies on single skeletal mu

You are about to perform some intricate electrical studies on single skeletal muscle fibers from a gastronemius muscle. But first, you must prepare 6L of a 170 mM NaCl solution in…

You are accidently left on mars and need to survive until a rescue mission arriv

You are accidently left on mars and need to survive until a rescue mission arrives. Your immediate need is drinking water. You have to use chemistry to produce the water you need …

You are adding moles of an ideal gas to a closed system. The initial temperature

You are adding moles of an ideal gas to a closed system. The initial temperature is 23.1 plusminus 0.05 0C and the volume of your system is 1.2 plusminus 0.01 L. Your initial pres…

You are administering a Windows Server 2008 R2 machine. You\'ve installed a new

You are administering a Windows Server 2008 R2 machine. You've installed a new application on your server, which installed a new service. The service cannot use Local System or Ne…

You are aiming to make a 250.0 mL buffer solution that is going to be at pH 4. U

You are aiming to make a 250.0 mL buffer solution that is going to be at pH 4. Using the Henderson-Hasselback equation, calculate the molarity of [A-] that you will need in the bu…

You are always running into trouble with mismatched braces in your Java programs

You are always running into trouble with mismatched braces in your Java programs, and decide to write a program that will help you to find your errors (if only you can match the b…

You are an IT consultant. Your client just got a large account and needs to upgr

You are an IT consultant. Your client just got a large account and needs to upgrade their network from the ground up. With this large account, they need to upgrade to a Fast Ether…

You are an engineer overseeing a site where there are four electron acceptors pr

You are an engineer overseeing a site where there are four electron acceptors present in the groundwater in addition to the contaminant, which is 200mg/L perchlorate (ClO4 - ). Th…

You are an engineer who is to design a CSTR for the elementary consecutive gas-p

You are an engineer who is to design a CSTR for the elementary consecutive gas-phase reactions The feed conditions and desired product specifications are known, together with the …

You are an engineer working for a company that synthesized and uses polymers for

You are an engineer working for a company that synthesized and uses polymers for a range of products. A competitor makes an identical polymer, PET, but its properties are superior…

You are an engineer working for a company that synthesizes and uses polymers for

You are an engineer working for a company that synthesizes and uses polymers for a range of products. A competitor makes an identical polymer, a polypropylene, bit its properties …

You are an industrial chemist working for a company that makes methanol (CH 3 OH

You are an industrial chemist working for a company that makes methanol (CH3OH) according to the equilibrium reaction shown below. You love your job, except that your assistant do…

You are an industrial chemist working for a company that makes methanol (CH 3 OH

You are an industrial chemist working for a company that makes methanol (CH3OH) according to the equilibrium reaction shown below. You love your job, except that your assistant do…

You are an industrial chemist working for a company that makes methanol (CH3OH)

You are an industrial chemist working for a company that makes methanol (CH3OH) according to the equilibrium reaction shown below. You love your job, except that your assistant do…

You are an industrial hygienist conducting personal sampling on a worker who is

You are an industrial hygienist conducting personal sampling on a worker who is overseeing a production process involving use of acetone (Note: The Occupational Safety and Health …

You are analyzing a machine that uses three different switches (SW1, SW2, SW3).

You are analyzing a machine that uses three different switches (SW1, SW2, SW3). The switches are connected to a light bulb, but only certain combinations of these switches will tu…

You are analyzing an amino acid and make the following observations: 1. Amino ac

You are analyzing an amino acid and make the following observations: 1. Amino acid composition is (A, S, K, F, V, P, G, R, L, T, Q, M) 2. Edman degradation gives the following pro…

You are analyzing an amino acid and make the following observations: 1. Amino ac

You are analyzing an amino acid and make the following observations: 1. Amino acid composition is (A, S, K, F, V, P, G, R, L, T, Q, M) 2. Edman degradation gives the following pro…

You are analyzing for Selenium (Se) in a mixture of peanuts (0.843 g). Any Se fr

You are analyzing for Selenium (Se) in a mixture of peanuts (0.843 g). Any Se from the original mixture has been converted to a fluorescent derivative and extracted into 25.0 mL o…

You are analyzing riboflavin in wheat flour by fluorescence spectroscopy (?ex =

You are analyzing riboflavin in wheat flour by fluorescence spectroscopy (?ex = 450 nm, ?em =530 nm). The extraction procedure is fairly complex. You obtain a 100g sample of the f…

You are analyzing riboflavin in wheat flour by fluorescence spectroscopy (?ex =

You are analyzing riboflavin in wheat flour by fluorescence spectroscopy (?ex = 450 nm, ?em =530 nm). The extraction procedure is fairly complex. You obtain a 100g sample of the f…

You are analyzing riboflavin in wheat flour by fluorescence spectroscopy (?ex =

You are analyzing riboflavin in wheat flour by fluorescence spectroscopy (?ex = 450 nm, ?em =530 nm). The extraction procedure is fairly complex. You obtain a 100g sample of the f…

You are analyzing riboflavin in wheat flour by fluorescence spectroscopy (?ex =

You are analyzing riboflavin in wheat flour by fluorescence spectroscopy (?ex = 450 nm, ?em =530 nm). The extraction procedure is fairly complex. You obtain a 100g sample of the f…

You are analyzing the sequence of a structural protein from muscle tissues of in

You are analyzing the sequence of a structural protein from muscle tissues of individuals with a debilitating muscle weakness disease. When comparing the sequence to that of the s…

You are asked by your instructor to construct a model of the NH_2Cl molecule. Be

You are asked by your instructor to construct a model of the NH_2Cl molecule. Being of a conservative nature, you proceed as directed in the section on Experimental Procedure. Fir…

You are asked to construct a capacitor having a capacitance near 1 nF and a brea

You are asked to construct a capacitor having a capacitance near 1 nF and a breakdown potential in excess of 11000 V. You think of using the sides of a tall plastic drinking glass…

You are asked to determine the Fe^3+ concentration of a 50 mL unknown water samp

You are asked to determine the Fe^3+ concentration of a 50 mL unknown water sample. You decide to use an EDTA titration buffered to pH = 10 For Fe^3+. and EDTA, log K_f = 25.1 and…

You are asked to determine the perimeter of the cover of your textbook. You meas

You are asked to determine the perimeter of the cover of your textbook. You measure the length as 39.36 cm and the width as 24.83 cm. How many significant figures should you repor…

You are asked to determine the thermometer correction for your assigned melting

You are asked to determine the thermometer correction for your assigned melting point apparatus. You obtain a pure sample of benzoic acid and determine its melting point range car…

You are asked to determine the thermometer correction for your assigned melting

You are asked to determine the thermometer correction for your assigned melting point apparatus. You obtain a pure sample of benzoic acid and determine its melting point range car…

You are asked to generate a titration curve for a salt containing the weak dipro

You are asked to generate a titration curve for a salt containing the weak diprotic sulfite ion base, SO32-. You are given a 0.25 M SO32- solution some of which you place in a fla…

You are asked to go into the lab and prepare a buffer solution with a pH of 6.40

You are asked to go into the lab and prepare a buffer solution with a pH of 6.40 ± 0.2. Which weak acid would be the best choice? A.carbonic acid, Ka = 4.2 x 10-7 B.potassium hydr…

You are asked to measure the amount of -glucosidase in a commercial enzyme solut

You are asked to measure the amount of -glucosidase in a commercial enzyme solution containing 20 mg protein/mL of solution. You place 1 mL of this enzyme solution into 9 mL of an…

You are asked to prepare 3.4 L of a HCN/NaCNbuffer that has a pH of 9.69 and an

You are asked to prepare 3.4 L of a HCN/NaCNbuffer that has a pH of 9.69 and an osmotic pressure of 1.59 atm at 298 K. What masses of HCN and NaCN should you use to prepare the bu…

You are asked to prepare 50.00 mL of a solution which has a specified concentrat

You are asked to prepare 50.00 mL of a solution which has a specified concentration of hydroxide ion. You do this by adding a certain volume of 0.300 M NaOH to a 50.00 mL volumetr…

You are asked to prepare 50.00 mL of a solution which has a specified concentrat

You are asked to prepare 50.00 mL of a solution which has a specified concentration of hydroxide ion. You do this by adding a certain volume of 0.300 M NaOH to a 50.00 mL volumetr…

You are asked to prepare 500. mL of a 0.100 M acetate buffer at pH 4.90 using on

You are asked to prepare 500. mL of a 0.100 M acetate buffer at pH 4.90 using only pure acetic acid (MW = 60.05 g/mol, pK_a = 4.76), 3.00 M NaOH, and water. Answer the following q…

You are asked to prepare 500. mL of a 0.100 M acetate buffer at pH 4.90 using on

You are asked to prepare 500. mL of a 0.100 M acetate buffer at pH 4.90 using only pure acetic acid (MW=60.05 g/mol, pKa=4.76), 3.00 M NaOH, and water. Answer the following questi…

You are asked to prepare 500. mL of a 0.100 M acetate buffer at pH 5.00 using on

You are asked to prepare 500. mL of a 0.100 M acetate buffer at pH 5.00 using only pure acetic acid (MW = 60.05 g/mol, pK_a = 4.76), 3.00 M NaOH, and water. Answer the following q…

You are asked to prepare 500. mL of a 0.100 M acetate buffer at pH 5.10 using on

You are asked to prepare 500. mL of a 0.100 M acetate buffer at pH 5.10 using only pure acetic acid (MW = 60.05 g/mol, pK_a = 4.76), 3.00 M NaOH, and water. Answer the following q…

You are asked to prepare 500. mL of a 0.100 M acetate buffer at pH 5.10 using on

You are asked to prepare 500. mL of a 0.100 M acetate buffer at pH 5.10 using only pure acetic acid (MW=60.05 g/mol, pK_a = 4.76), 3.00 M NaOH, and water. Answer the following que…

You are asked to prepare 500. mL of a 0.150 M acetate buffer at pH 5.00 using on

You are asked to prepare 500. mL of a 0.150 M acetate buffer at pH 5.00 using only pure acetic acid (MW-60.05 g/mol, pK-4.76), 3.00 M NaOH, and water. Answer the following questio…