Chemistry concepts and calculations
117302 questions • Page 2116 / 2347
You are given an arbitrary input set of integers. Periodically you receive a que
You are given an arbitrary input set of integers. Periodically you receive a query with an integer x that wishes to know how many integers in the input set are less than or equal …
You are given an array A[1..n]. You are given that for every A[i], A[i] is at mo
You are given an array A[1..n]. You are given that for every A[i], A[i] is at most 20 places from its sorted position (for example, A[30] will be somewhere between A[10] and A[50]…
You are given an impure sample of a phenol and asked to purify it. You ask for i
You are given an impure sample of a phenol and asked to purify it. You ask for information about the suspected impurities, but it seems no one really knows. So you ask for an IR/N…
You are given an impure sample of a phenol and asked to purify it. You ask for i
You are given an impure sample of a phenol and asked to purify it. You ask for information about the suspected impurities, but it seems no one really knows. So you ask for an IR/N…
You are given an impure sample of a phenol and asked to purify it. You ask for i
You are given an impure sample of a phenol and asked to purify it. You ask for information about the suspected impurities, but it seems no one really knows. So you ask for an IR/N…
You are given an impure sample of a phenol and asked to purify it. You ask for i
You are given an impure sample of a phenol and asked to purify it. You ask for information about the suspected impurities, but it seems no one really knows. So you ask for an IR/N…
You are given an impure sample of a phenol and asked to purify it. You ask for i
You are given an impure sample of a phenol and asked to purify it. You ask for information about the suspected impurities, but it seems no one really knows. So you ask for an IR/N…
You are given an impure sample of a phenol and asked to purify it. You ask for i
You are given an impure sample of a phenol and asked to purify it. You ask for information about the suspected impurities, but it seems no one really knows. So yo…
You are given an uncalibrated thermometer to calibrate. You place the thermomete
You are given an uncalibrated thermometer to calibrate. You place the thermometer in an ice bath and make a mark at the level of the mercury column. You then place the thermometer…
You are given an unknown (solid or solution) and told that it can be one of the
You are given an unknown (solid or solution) and told that it can be one of the other of the compounds in the pairs listed below. Describe a simple chemical test (Not a flame test…
You are given an unknown diprotic acid. Titraiton of an aqueous solution of this
You are given an unknown diprotic acid. Titraiton of an aqueous solution of this acid with a 2.0 M sodium hydroxide solution is conducted. Using the given experimental data, deter…
You are given an unknown hydrated metal salt containing chloride ion MCl2 times
You are given an unknown hydrated metal salt containing chloride ion MCl2 times nH2O a. you dissolve 0.500 g of this salt in water and add excess silver nitrate slutionAgNO3 to pr…
You are given an unknown sample that when treated with hydrochloric acid forms a
You are given an unknown sample that when treated with hydrochloric acid forms a precipitate. After decantating the liquid, you add boiling water to the remaining solid. Some of t…
You are given an unknown sample that when treated with hydrochloric acid forms a
You are given an unknown sample that when treated with hydrochloric acid forms a precipitate. After decantating the liquid, you add boiling water to the remaining solid. Some of t…
You are given aqueous solutions of the following salts at 25°C. Predict whether
You are given aqueous solutions of the following salts at 25°C. Predict whether each solution will be acidic, basic, or neutral, and explain why. (a) potassium propanoate, KC3H5O2…
You are given six numbered test tubes, #1 - #6. The test tubes contain 0.1 M sol
You are given six numbered test tubes, #1 - #6. The test tubes contain 0.1 M solutions of the following compounds: AI(NO_3)_3 Ca(NO_3)_2 AgNCO_3 CuSO_4 Ba(NO_3)_2 Zn(NO_3)_2 You t…
You are given sodium acetate, 1M HCl, NaHCO3 and Na2CO3. Determine which of thes
You are given sodium acetate, 1M HCl, NaHCO3 and Na2CO3. Determine which of these four you would need and then show calculations to make buffer pH = 4.7 by method 2. Assume making…
You are given some ferrous iodide, FeI2, and are asked to extract the iron throu
You are given some ferrous iodide, FeI2, and are asked to extract the iron through electrolysis. What can be said about the merits of molten versus aqueous FeI2? You are given som…
You are given the complete definition of a class called Person below. Write a ch
You are given the complete definition of a class called Person below. Write a child class calledTitledPerson that inherits from Person. The class TitledPerson has one additional S…
You are given the following cell at 25 degree C: Pb(s) | Pb^2+(aq, 0.60M) || Sn^
You are given the following cell at 25 degree C: Pb(s) | Pb^2+(aq, 0.60M) || Sn^2+ (aq, 0.1 M), Sn^4+ (aq, 0.15 M) |Pt(s) Calculate E_cell and compare the spontaneity of the cell …
You are given the following half-reactions. AgCl(s) + e Ag(s) + Cl (aq) script E
You are given the following half-reactions. AgCl(s) + e Ag(s) + Cl (aq) script E° = +0.22 V Ag+(aq) + e Ag(s) script E° = +0.80 V Construct a cell with the following cell reaction…
You are given the following relational schema ( keys bolded ): Faculty( SSN ,Nam
You are given the following relational schema (keys bolded): Faculty(SSN,Name) Student(PersonNo, Name) Course(CourseNo, Title) Offering(CourseNo, Semester, InstructorSSN, Credit) …
You are given the following vector: A = [18 334 98 73 129 7 62 9 212 55 3] Write
You are given the following vector: A = [18 334 98 73 129 7 62 9 212 55 3] Write a function that has 2 inputs: The cut-off, C, and An array, A; and 3 outputs: A vector of zeros an…
You are given three different materials and told one is a single crystal ceramic
You are given three different materials and told one is a single crystal ceramic, one an amorphous polymer and an amorphous material. The following instruments are available to yo…
You are given three different solid compounds, A, B and C, that have the same me
You are given three different solid compounds, A, B and C, that have the same melting point, color and appearance. You may use only melting point determination to establish that …
You are given three identical 2-liter Dewar flasks (vacuum flasks), A, B, and C,
You are given three identical 2-liter Dewar flasks (vacuum flasks), A, B, and C, and an empty, smaller 600 mL flask D, which has thermally conducting walls. Flask D easily can be …
You are given three pieces of wire that have different shapes (dimensions). You
You are given three pieces of wire that have different shapes (dimensions). You connect each piece of wire separately to a battery. The first piece has a length L and cross-sectio…
You are given two beakers. Beaker 1 contains liquid 2-propanol, ((CH3)2CHOH), an
You are given two beakers. Beaker 1 contains liquid 2-propanol, ((CH3)2CHOH), and beaker 2 contains liquid methyl acetate, CH3CO2CH3. a. What intermolecular forces are present bet…
You are given two beakers. Beaker 1 contains liquid 2-propanol, ((CH3)2CHOH), an
You are given two beakers. Beaker 1 contains liquid 2-propanol, ((CH3)2CHOH), and beaker 2 contains liquid methyl acetate, CH3CO2CH3. a. What intermolecular forces are present bet…
You are given two solutions containing different purified DNAs. One is from the
You are given two solutions containing different purified DNAs. One is from the bacterium P. aeruqinosa and has a GC composition of 68%, whereas the other is from a mammal and has…
You are given two unlabeled bottles, each of which contains a clear colorless li
You are given two unlabeled bottles, each of which contains a clear colorless liquid. One of the bottles contains deionized water; one contains a sodium chloride solution. How cou…
You are given two unlabeled gas tanks. One contains oxygen, the other contains H
You are given two unlabeled gas tanks. One contains oxygen, the other contains Hydrogen. Besides filling a balloon with each to see which one floats, describe another simple exper…
You are going to a chemical cold pack using NHNOs and water. You have 100 mL of
You are going to a chemical cold pack using NHNOs and water. You have 100 mL of water that is at 25.00 °C. You want the temperature of the water to decrease to 5.00 ·The heat abso…
You are going to carry out a gastric lavage (stomach pump) in order to try and g
You are going to carry out a gastric lavage (stomach pump) in order to try and get rid of the aspirin that has not yet been absorbed. The procedure involves washing the organ with…
You are going to create a List in Javascript using JSFiddle. You will then fill
You are going to create a List in Javascript using JSFiddle. You will then fill it with numbers consecutively numbered from 2 to n where n is entered by the user. Create a second …
You are going to create a List. You will then fill it with numbers consecutively
You are going to create a List. You will then fill it with numbers consecutively numbered from 2 to n where n is entered by the user. Create a second List - this one should be a Q…
You are going to implement functions to manipulate Fractions. You are also going
You are going to implement functions to manipulate Fractions. You are also going to thoroughly test your functions with both your own test data. There will be strict rules regardi…
You are going to standardize your sodium hydroxide by titrating with potassium h
You are going to standardize your sodium hydroxide by titrating with potassium hydrogen phthalate. As an example, you dissolve 0.3365 g of potassium hydrogen phthalate, otherwise …
You are going to study the thermodynamics of a redox reaction. You have two beak
You are going to study the thermodynamics of a redox reaction. You have two beakers: one with an aqueous solution of the oxidizing agent and the other with an aqueous solution of …
You are going to study the thermodynamics of a redox reaction. You have two beak
You are going to study the thermodynamics of a redox reaction. You have two beakers: one with an aqueous solution of the oxidizing agent and the other with an aqueous solution of …
You are going to walk through a nuclear decay series for an atom of Uranium-238
You are going to walk through a nuclear decay series for an atom of Uranium-238 that decays sequentially all the way down to Lead-206. The goal is to predict which radioisotopes s…
You are going to walk through a nuclear decay series for an atom of Uranium-238
You are going to walk through a nuclear decay series for an atom of Uranium-238 that decays sequentially all the way down to Lead-206. The goal is to predict which radioisotopes s…
You are going to write a program that allows the user to play a simple guessing
You are going to write a program that allows the user to play a simple guessing game in which your program thinks up an integer and allows the user to make guesses until the user …
You are going to write a program that allows the user to play a simple guessing
You are going to write a program that allows the user to play a simple guessing game in which your program thinks up an integer and allows the user to make guesses until the user …
You are handed a pale green liquid, and informed that someone accidentally spill
You are handed a pale green liquid, and informed that someone accidentally spilled a minute fleck of an intensely green-colored crystalline dye in a rather expensive solvent. It d…
You are hanging out with your friend Liz and decide to warm up some snacks for h
You are hanging out with your friend Liz and decide to warm up some snacks for her and yourself in the microwave. Liz then tells you she doesn't microwave her food because she rea…
You are hanging out with your friend Liz you decided to warm up some snacks in t
You are hanging out with your friend Liz you decided to warm up some snacks in the microwave. Liz then tells you she doesn't microwave her food because she read in a magazine that…
You are hardening a tool made of BCC iron by increasing the carbon concentration
You are hardening a tool made of BCC iron by increasing the carbon concentration at its surface by heating the tool in the presence of a carbon-rich gas (for example, methane). A …
You are holding a test tube containing an exothermic reaction. Based on this inf
You are holding a test tube containing an exothermic reaction. Based on this information, you will most likely observe... an increase in temperature a decrease in temperature lumi…
You are in Mars. One of your tasks is to send your robot and record temperatures
You are in Mars. One of your tasks is to send your robot and record temperatures in Celsius over a 20 sols period. Your robot did as instructed, and you uploaded the data to a fil…
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