Chemistry concepts and calculations

What is a good metaphor or example to explain to an English major the difference

What is a good metaphor or example to explain to an English major the difference between classical computer science and "being good with using MS-Windows" computer science compute…

What is a good software to organize a large IMAP account\'s mail? Right now, I\'

What is a good software to organize a large IMAP account's mail? Right now, I'm using Thunderbird filters, but ideally, I want a system where my secretary can manage the filters b…

What is a good suggestion to improve the outcome of column chromatography to sep

What is a good suggestion to improve the outcome of column chromatography to separate the components of spinach? -Identifier" list of the colored fractions collected (i.e. test tu…

What is a hidden AJAX request? I\'ve noticed an increase in the usage of hidden

What is a hidden AJAX request? I've noticed an increase in the usage of hidden AJAX requests designed to make a user's action appear to happen immediately. I'll refer to this type…

What is a key assumption to make when using a calorimeter? In the case of a coff

What is a key assumption to make when using a calorimeter? In the case of a coffee cup calorimeter, the water will only increase in temperature. All of the energy released by the …

What is a peptic ulcer? (a) Why is antibiotic-bismuth therapy used? (b) What are

What is a peptic ulcer? (a) Why is antibiotic-bismuth therapy used? (b) What are the possible consequences if Gary fails to follow this treatment regimen? Francis, a middle-age sa…

What is a proper or, if possible to tell, the best way to store configuration in

What is a proper or, if possible to tell, the best way to store configuration in matters of security? So far I can tell that a database with very restricted access is a good way, …

What is a protolith? a. The parent rock before metamorphism b. One of the plate

What is a protolith? a. The parent rock before metamorphism b. One of the plate tectonic boundaires c. A type of mineral in sedimentary rocks d. A type of fault ------------------…

What is a reasonable solvent to use to dissolve the original mixture of ferrocen

What is a reasonable solvent to use to dissolve the original mixture of ferrocene and acetylferrocene so that it can be spotted on the TLC plate for analysis? Hexane methylene chl…

What is a solvent that either bezoin OR 1,4-dibromobenzene is SOLUBLE in at room

What is a solvent that either bezoin OR 1,4-dibromobenzene is SOLUBLE in at room temperature. That the remaining compound becomes more soluble in when you increase the temperature…

What is a spray tower and its importance in mass transfer? What kind of gas solu

What is a spray tower and its importance in mass transfer? What kind of gas solubility is required in it? The mass transfer resistance will be more in gas or liquid phase for spra…

What is a thermodynamically reversible process? How is the amount of work obtain

What is a thermodynamically reversible process? How is the amount of work obtained from a change related to thermodynamically reversibility? Select all that apply. In a reversible…

What is a transmutation reaction? A. A nuclear reaction in which one stable isot

What is a transmutation reaction? A. A nuclear reaction in which one stable isotope is converted into a different isotope. B. A nuclear reaction in which one unstable isotope is c…

What is activation energy? If the rate of decomposition of N_2O_5 in the followi

What is activation energy? If the rate of decomposition of N_2O_5 in the following reaction at a particular instant is 4.2 times 10^-7 M/s, 2N_3O_5(g) rightarrow 4NO_2 + O_2 a) Wr…

What is an absolute temperature scale? How are degrees Celsius related to kelvin

What is an absolute temperature scale? How are degrees Celsius related to kelvins? Define density. Describe some uses of density. Why should units be carried along with numbers in…

What is an advantage of split injection versus splitless injection in gas chroma

What is an advantage of split injection versus splitless injection in gas chromatography? (A) Split injection is more sensitive. (B) Split injection provides better resolution. (C…

What is an antibonding molecular orbital? The molecular orbital that contributes

What is an antibonding molecular orbital? The molecular orbital that contributes to bonding. A molecular orbital that is higher in energy than the bonding orbitals, and does not c…

What is an azeotrope? A student performs two melting point determinations on a c

What is an azeotrope? A student performs two melting point determinations on a crystalline product. In one determination, the capillary tube contains a sample of 1-2 mm in height …

What is an emission spectrum? Part B How does an emission spectrum of a gas in a

What is an emission spectrum? Part B How does an emission spectrum of a gas in a discharge tube differ from a white light spectrum? Essay answers are limited to about 500 words (3…

What is an empirical formula? If i hav 1.0 g each of two substances with the sam

What is an empirical formula? If i hav 1.0 g each of two substances with the same empirical formula what can be said about those substances? The two unknowns are the same substanc…

What is an example of \"Business Logic\" that should reside in the DomainModel i

What is an example of "Business Logic" that should reside in the DomainModel i.e. inside an Entity instead of inside a (Domain) Service, as well as some example logic that should …

What is an example of a covalent bond? A weak electroneutral force attracting tw

What is an example of a covalent bond?               A weak electroneutral force attracting two hydrogen atoms to each other forming the bond One hydrogen atom transferring its el…

What is an example of a covalent bond? A weak electroneutral force attracting tw

What is an example of a covalent bond?               A weak electroneutral force attracting two hydrogen atoms to each other forming the bond One hydrogen atom transferring its el…

What is are percent by mass of carbon in (C_2 H_6 SO)? a. 15.49 % b. 20.0 % c. 3

What is are percent by mass of carbon in (C_2 H_6 SO)? a. 15.49 % b. 20.0 % c. 30.7% d. 44.3% For questions 6, 7 and 8 consider the following reaction: 4NH_3(g) + 70O_2(g) rightar…

What is compound Z in the following sequence? (CH3)2CHCH2COH ----- 1.LiAlH4, die

What is compound Z in the following sequence? (CH3)2CHCH2COH ----- 1.LiAlH4, diethyl ether, 2. H2O -----> compound X ----HBr, heat -----> Compound Y ------ 1. NaCN, 2. H3O+,…

What is compound Z in the following sequence? (CH3)2CHCH2COH ----- 1.LiAlH4, die

What is compound Z in the following sequence? (CH3)2CHCH2COH ----- 1.LiAlH4, diethyl ether, 2. H2O -----> compound X ----HBr, heat -----> Compound Y ------ 1. NaCN, 2. H3O+,…

What is considered to happen in an aqueous solution if no precipitates can form

What is considered to happen in an aqueous solution if no precipitates can form from the ions in solution? a) It is said that no reaction occurs, because all the ions remain as aq…

What is difference, if any, between the staining characteristic of cotton and po

What is difference, if any, between the staining characteristic of cotton and polyester? a) both stained equally well. b) the cotton stained a much darker. c) the polyester staine…

What is dynamic equilibrium? (A) Dynamic equilibrium in a chemical reaction is t

What is dynamic equilibrium? (A) Dynamic equilibrium in a chemical reaction is the condition in which the rate of the forward reaction is higher than the rate of the reverse react…

What is essential oils? What are they used for? What are the methods used to iso

What is essential oils? What are they used for? What are the methods used to isolate them? Report the normal boiling point of Eugenol (literature). Compare the literature B.P. wit…

What is expected when the reaction shown below takes place in a thermally-insula

What is expected when the reaction shown below takes place in a thermally-insulated container outfitted with a movable piston at a constant atmospheric pressure of 1 atm? 2 C_2 H_…

What is expected when the reaction shown below takes place in a thermally-insula

What is expected when the reaction shown below takes place in a thermally-insulated container outfitted with a movable piston at a constant atmospheric pressure of 1 atm? Volume w…

What is expected when the reaction shown below takes place in a thermally-insula

What is expected when the reaction shown below takes place in a thermally-insulated container outfitted with a movable piston at a constant atmospheric pressure of 1 atm? 2 C_2H6(…

What is expected when the reaction shown below takes place in a thermally-insula

What is expected when the reaction shown below takes place in a thermally-insulated container outfitted with a movable piston at a constant atmospheric pressure of 1 atm? 2 C_2 H_…

What is feedback inhibition? Reversible inhibition of the substrate by the produ

What is feedback inhibition? Reversible inhibition of the substrate by the product of the reaction Reversible, noncompetitive inhibition of an enzyme in a pathway by a product of …

What is formed when a carboxylic acid is dissolved in a dilute solution of sodiu

What is formed when a carboxylic acid is dissolved in a dilute solution of sodium hydroxide? Spelling counts. Hint: two words. "The corresponding _________ ________." Which struct…

What is happening at the molecular level when a polar molecule like water intera

What is happening at the molecular level when a polar molecule like water interacts with a typical sodium ion? The water molecule aligns such that the oxygen interacts with the so…

What is happening, at a molecular level, when a salt dissolves in solvent. Be su

What is happening, at a molecular level, when a salt dissolves in solvent. Be sure include descriptions of the intramolecular (solvent/solute) and intermolecular forces involved. …

What is heat capacity? Explain how heat capacity can be thought of as an energy

What is heat capacity? Explain how heat capacity can be thought of as an energy capacity. What is the significance of the First Law of Thermodynamics? Explain your reasoning. Cons…

What is indicated by the shape of the litration curve? A) A dtprotic acid was ti

What is indicated by the shape of the litration curve? A) A dtprotic acid was titrated with a strong base. B) A triprotic acid was titrated with a strong base. C) A diprotic base …

What is interference, as defined by the procedure for this experiment in your la

What is interference, as defined by the procedure for this experiment in your laboratory manual? An Ice Blue Raspberry Koolaid package is labeled to contain 4.8 g of powder, which…

What is lattice energy (in an understandable way of explaining, Wikipedia defini

What is lattice energy (in an understandable way of explaining, Wikipedia definition are too complicated)? how do I use lattice energy to deal with AP Chemistry big idea 5 questio…

What is meant by temperature programming in gas chromatography? Temperature prog

What is meant by temperature programming in gas chromatography? Temperature programming is usually applied to samples containing a mixture of components that have boiling points w…

What is meant by temperature programming in gas chromatography? Temperature prog

What is meant by temperature programming in gas chromatography? Temperature programming involves increasing the temperature of a GC column as a function of time. Temperature progr…

What is meant by temperature programming in gas chromatography? Temperature prog

What is meant by temperature programming in gas chromatography? Temperature programming keeps the temperature of a GC column at a fixed value as the separation proceeds. Temperatu…

What is meant by the molar conversion ratio? (4) Grams to moles and moles to gra

What is meant by the molar conversion ratio? (4) Grams to moles and moles to grams 1 moles= 58.32 grams Explain what is meant by an oxidation - reduction reaction (2). is any chem…

What is meant by the term, standard solution? Define the following solution conc

What is meant by the term, standard solution? Define the following solution concentration: Molar Normal How is the end point of the titrations determined in this experiment? What …

What is molarity? Molarity defined as the mass(in kilograms) of a given componen

What is molarity? Molarity defined as the mass(in kilograms) of a given component (solute or solvent) per volume(in cubic meters) of solution. Molarity defined as the mass (in gra…

What is my answer for Part B? Free-energy change, Delta G degree, is related to

What is my answer for Part B? Free-energy change, Delta G degree, is related to cell potential, E degree, by the equation Delta G degree = -nFE degree where n is the number of mol…

What is my answer for the second part? The equilibrium constant, K, for a redox

What is my answer for the second part? The equilibrium constant, K, for a redox reaction Is related to the standard potential, E degree, by the equation In K = nFE degree/RT where…