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Chemistry concepts and calculations

117302 questions • Page 2121 / 2347

You are trying to figure out the thermodynamic data for Al(OH)_3 and you test tw
You are trying to figure out the thermodynamic data for Al(OH)_3 and you test two different temperatures to collect data. You find that the pH at 25.0 degree C is 8.261 and at 50.…
You are trying to isolate an enzyme that catalyzes the conversion of A ? B, and
You are trying to isolate an enzyme that catalyzes the conversion of A ? B, and you have a sensitive assay for this enzyme. After lysing open the cells, you find that the activity…
You are trying to keep track of your CDs. Write a function makeCD(gn, ar, ti, yr
You are trying to keep track of your CDs. Write a function makeCD(gn, ar, ti, yr, st, pr) that will create a structure with the following field name, Genre, Artist, Title, Year, S…
You are trying to make money in the stock market. On each given day, you can cho
You are trying to make money in the stock market. On each given day, you can choose to invest your money in the stock of any one of k companies. By taking CS 330, you have acquire…
You are trying to model a system based on seawater, so you create a solution tha
You are trying to model a system based on seawater, so you create a solution that contains the approximate concentrations of the major ionic components of seawater: 0.450 M NaCl, …
You are trying to purify a new enzyme that is responsible for a key biosynthetic
You are trying to purify a new enzyme that is responsible for a key biosynthetic step in an important pathogenic bacterium so that you can determine its structure and develop a dr…
You are trying to reproduce experimental data from the previous student in the l
You are trying to reproduce experimental data from the previous student in the lab. He/she had reported that the enzyme under investigation has a k_cal of 1875 s^-1 and a catalyti…
You are trying to separate five proteins, which are listed below, by gel filtrat
You are trying to separate five proteins, which are listed below, by gel filtration chromatography.  Which of the proteins will elute first from the column? a. hemoglobin (62 kDa)…
You are using a 3.00 M solution of HNO3 to titrate a sample of 0.300 M KOH. Belo
You are using a 3.00 M solution of HNO3 to titrate a sample of 0.300 M KOH. Below is a table of common indicators that shows the range over which they change colors. (a) Which ind…
You are using a Geiger counter to measure the activity of a radioactive substanc
You are using a Geiger counter to measure the activity of a radioactive substance over the course of several minutes. If the reading of 400. counts has diminished to 100. counts a…
You are using carbon-dating to determine how old an indian puebloin the southwes
You are using carbon-dating to determine how old an indian puebloin the southwestern US is. If the amount of C14 in the bone isapproximately 12.5 of the amount in the bone at the …
You are using the Array-based bag that is in the book and that we covered in cla
You are using the Array-based bag that is in the book and that we covered in class. Write a complete C++ main( ) program that does the following the 6 items listed below. Assume t…
You are using the following procedure from your lab instructions to determine th
You are using the following procedure from your lab instructions to determine the copper content of a brass sample: "Approximately 35 mg of a dried brass sample (accurately measur…
You are using the following procedure from your lab instructions to determine th
You are using the following procedure from your lab instructions to determine the copper content of a brass sample: "Approximately 35 mg of a dried brass sample (accurately measur…
You are visiting another planet, and the aliens there find out that you are a bi
You are visiting another planet, and the aliens there find out that you are a biochemist. They want you to determine change in enthalpy for the reaction shown below, but all they …
You are visiting another planet, and the aliens there find out that you are a bi
You are visiting another planet, and the aliens there find out that you are a biochemist. They want you to determine change in enthalpy for the reaction shown below, but all they …
You are visiting another planet, and the aliens there find out that you are a bi
You are visiting another planet, and the aliens there find out that you are a biochemist. They want you to determine change in enthalpy for the reaction shown below, but all they …
You are visiting the island described in Example 2.3.14 and have the following e
You are visiting the island described in Example 2.3.14 and have the following encounters with natives: a. Two natives A and B address you as follows: A says: Both of us are knigh…
You are walking down a hallway in the Benson Building and glance into the open d
You are walking down a hallway in the Benson Building and glance into the open doorway of a lab. You see a student that you do not know, who is not wearing any eye or face protect…
You are watching TV late at night and see an ad for the ACME Model #163 refriger
You are watching TV late at night and see an ad for the ACME Model #163 refrigeration and heating unit for only $99.99. The unit takes compressed air at 1.25 atm pressure and 75°F…
You are watching TV late at night and see an ad for the ACME Model #163 refriger
You are watching TV late at night and see an ad for the ACME Model #163 refrigeration and heating unit for only $99.99. The unit takes compressed air at 1.25 atm pressure and 75°F…
You are working as a Regulatory Affairs specialist at Bayer. The Director of Pro
You are working as a Regulatory Affairs specialist at Bayer. The Director of Product Development comes to you seeking your advice about pursuing a FDA biowaiver (background info f…
You are working at the U.S. Patent Office and an application for a patent comes
You are working at the U.S. Patent Office and an application for a patent comes to your attention. This has been given to you based upon your expertise in the sciences. This paten…
You are working for a shipping company. Your job is to stand at the bottom of a
You are working for a shipping company. Your job is to stand at the bottom of a 8.0-m-long ramp that is inclined at 37 degree above the horizontal. You grab packages off a conveyo…
You are working for a waste disposal company, and are called to dispose of a sol
You are working for a waste disposal company, and are called to dispose of a solution of an unknown acid found in a chemistry lab. You are concerned that if it spills in transport…
You are working in a candy factory that makes both cherry and lemon candy. One a
You are working in a candy factory that makes both cherry and lemon candy. One afternoon after lunch, you get sleepy and accidentally put the ingredients for cherry candy into the…
You are working in a laboratory that has justdiscovered the new element Elmonium
You are working in a laboratory that has justdiscovered the new element Elmonium, El. You are given the task ofestimating the bond energy of hydrogen elmonide, HEl. You decide tor…
You are working in the lab and discover a new factor (X) that appears to play so
You are working in the lab and discover a new factor (X) that appears to play some important role in wound healing. You are provided with the information that each receptor only b…
You are working in the laboratory and are given a 1.0 times 10^-2 M erythrosine
You are working in the laboratory and are given a 1.0 times 10^-2 M erythrosine dye solution. You are then asked to make 100.0 mL of a 3.2 times 10^-6 M erythrosine dye solution. …
You are working in the laboratory and you need to make a formic acid solution of
You are working in the laboratory and you need to make a formic acid solution of a certain concentration. The lab is out of formic acid (HCOOH), but you find a formic acid solutio…
You are working on an antidrug campaign. You have to produce a 30-second public
You are working on an antidrug campaign. You have to produce a 30-second public service announcement discussing the effects of drugs on neural activity. What are you going to say?…
You are working on an expiriment with a newly discovered enzyme. This enzyme wor
You are working on an expiriment with a newly discovered enzyme. This enzyme works most efficienly at a pH of 5.70. You make 250mL of a 150 mM acetate buffer (pKa=4.76), pH 5.70. …
You are working on an improved polypropylene (–[CH2-CHCH3]n-) hernia correction
You are working on an improved polypropylene (–[CH2-CHCH3]n-) hernia correction mesh that releases an anti-inflammatory drug after implantation and is coated with type I collagen …
You are working on an improved polypropylene (–[CH2-CHCH3]n-) hernia correction
You are working on an improved polypropylene (–[CH2-CHCH3]n-) hernia correction mesh that releases an anti-inflammatory drug after implantation and is coated with type I collagen …
You are working with a company that is interested in identifying food applicatio
You are working with a company that is interested in identifying food applications for coconut oil and linseed oil.You have been asked to compare the physicochemical properties of…
You are working with the following organic substitution reaction: The activated
You are working with the following organic substitution reaction: The activated complex for this reaction is: Select all of the following that are true about this reaction. Adding…
You are writing a small program to calculate and plot the system response of a f
You are writing a small program to calculate and plot the system response of a first-order system for a variety of initial conditions and time-constants. The first part is to writ…
You attempt to perform the bromination of trans -cinnamic acid shown below. You
You attempt to perform the bromination of trans-cinnamic acid shown below. You decide to take an IR spectrum of your product and see a strong, broad signal at 3500 cm-1. Is this s…
You begin with a beaker containing 50.0 mL of a solution of an unknown weak base
You begin with a beaker containing 50.0 mL of a solution of an unknown weak base with a concentration of 0.35 M and a K_b value of 4.0 times 10^7. You titrate this weak base with …
You believe you have cracked a secret code that uses elemental symbols to spell
You believe you have cracked a secret code that uses elemental symbols to spell words. The code uses numbers to designate the elemental symbols. Each number is the sum of the atom…
You bought a set of lawn chairs at Wally Land for your presidential election par
You bought a set of lawn chairs at Wally Land for your presidential election party. These are those painted aluminum chairs with the woven Nylon seats and backs. Two thirds of the…
You buy an older house (100 years old or so) and it has a great basement office
You buy an older house (100 years old or so) and it has a great basement office and workshop where you spend most of your time on the weekend. The problem is the older oil-heat fu…
You can also enter units that are combinations of other units. Keep in mind that
You can also enter units that are combinations of other units. Keep in mind that you have to indicate the multiplication of units explicitly either with a multiplication dot or a …
You can also enter units that are combinations of other units. Keep in mind that
You can also enter units that are combinations of other units. Keep in mind that you have to indicate the multiplication of units explicitly either with a multiplication dot or a …
You can also enter units that are combinations of other units. Keep in mind that
You can also enter units that are combinations of other units. Keep in mind that you have to indicate the multiplication of units explicitly either with a multiplication dot or a …
You can also get a very rough idea of the purity of your purified product from t
You can also get a very rough idea of the purity of your purified product from the melting point range. Give the melting point range for the purified product and briefly explain i…
You can analyze for a copper compound in water using an instrument called a spec
You can analyze for a copper compound in water using an instrument called a spectrophotometer. [A spectrophotometer is a scientific instrument that measures the amount of light (o…
You can customize your own PC through a brand-name company such as Dell or Hewle
You can customize your own PC through a brand-name company such as Dell or Hewlett-Packard, or you can create your own personal model by choosing each component on your own. Decid…
You can figure out whether a substance floats or sinks if you know its density a
You can figure out whether a substance floats or sinks if you know its density and the density of the liquid. In which of the liquids listed below will polystyrene (PS) float? (PS…
You can find a copy of java implementation of the minimax version of the tic-tic
You can find a copy of java implementation of the minimax version of the tic-tic-toe zipped with this document. The objective of this assignment is for you to identify a scoring t…