Chemistry concepts and calculations

1. p : The hero is American q : The heroine is British r : The villain is French

1. p: The hero is American q: The heroine is British r: The villain is French s: The movie is good Using the propositions p, q, and r defined below, translate the statements that …

1. possibly one of the lowest experimental pressures achievable is 1.0*10^-15 to

1. possibly one of the lowest experimental pressures achievable is 1.0*10^-15 torr. how many molecules are there in 250 mL flask that has been ecacuated to this pressure at 77.0K …

1. predict how the following errors would affect your calculated percent of pata

1. predict how the following errors would affect your calculated percent of patassium chlorate (high,low, or no effect) explain your reasoning. a) the balance used for all weighin…

1. program_p1.py This program should use a main function and two other functions

1. program_p1.py This program should use a main function and two other functions named playlist and savelist as follows: The main function: The main function should create an empt…

1. pure ethanol has a density of 0.78945 g/cm 3 at20.0 C and 0.80625 g/cm 3 at 0

1. pure ethanol has a density of 0.78945 g/cm3 at20.0 C and 0.80625 g/cm3 at 0.0 C. What will be thedifference in mass that 500.0 mL flask will hold at 0.0 C from thatat 20.0 C? A…

1. rHo for the following reaction is 10 kJ/mol, and rSo is zero. At what tempera

1.   rHo for the following reaction is 10 kJ/mol, and rSo is zero. At what temperature will the mole fraction of cis-butene equal 0.20 ? Assume no other molecules are present and …

1. reaction rate laws are frequently used to investigate reaction mechanisms. wo

1. reaction rate laws are frequently used to investigate reaction mechanisms. would your results to this experiment be consistent with either or both of the following mechanisms? …

1. reaction rate laws are frequently used to investigate reaction mechanisms. wo

1. reaction rate laws are frequently used to investigate reaction mechanisms. would your results to this experiment be consistent with either or both of the following mechanisms? …

1. reaction rate laws are frequently used to investigate reaction mechanisms. wo

1. reaction rate laws are frequently used to investigate reaction mechanisms. would your results to this experiment be consistent with either or both of the following mechanisms? …

1. reaction rate laws are frequently used to investigate reaction mechanisms. wo

1. reaction rate laws are frequently used to investigate reaction mechanisms. would your results to this experiment be consistent with either or both of the following mechanisms? …

1. regarding solution of Benzene and toluene that exhibits ideal behavior a. Wha

1. regarding solution of Benzene and toluene that exhibits ideal behavior a. What will be the composition in terms of mole percentages of a benzene-toluene solution that has a vap…

1. regarding solution of Benzene and toluene that exhibits ideal behavior a. Wha

1. regarding solution of Benzene and toluene that exhibits ideal behavior a. What will be the composition in terms of mole percentages of a benzene-toluene solution that has a vap…

1. salicylic acid has the following solubility profile in water: 0.2 g/100 mL@ 2

1. salicylic acid has the following solubility profile in water: 0.2 g/100 mL@ 20 0C and 7.5 g/100mL @ 100 0C; would water be a good solvent for a single-solvent recrystallization…

1. sodium diamminedicarbonatoruthenate(III) 2. tetraamminediaquairon(III) chlori

1. sodium diamminedicarbonatoruthenate(III) 2. tetraamminediaquairon(III) chloride I am getting the following for my answers: 1. Na[Ru(CO3)2(NH3)2], but the correct answer in the …

1. solution student was handed three solutions, labeled 1, 2, and 3. She was tol

1. solution student was handed three solutions, labeled 1, 2, and 3. She was told that one conained o.IM HNO3, another contained 0.1M KOH, and the third contained a sol eWhen she …

1. solution student was handed three solutions, labeled 1, 2, and 3. She was tol

1. solution student was handed three solutions, labeled 1, 2, and 3. She was told that one conained o.IM HNO3, another contained 0.1M KOH, and the third contained a sol eWhen she …

1. stoichiometry questions a) A steel cylinder contains 5.00 mole of graphite (n

1. stoichiometry questions a) A steel cylinder contains 5.00 mole of graphite (neat carbon) and 5.00 moles of molecular oxygen. The mixture is ignited and all the graphite reacts.…

1. suppose that 3.00 g of naphthalene is dissolved in 30 mL of hot 95% ethanol a

1. suppose that 3.00 g of naphthalene is dissolved in 30 mL of hot 95% ethanol and cooled to 10C. If the solubility of naphthalene is 1.20 g/100 mL of 95% ethanol at 10C, how much…

1. template < class T1, class T2 > T1 f1( T1 value1, T2 value2 ) { if ( value1

1. template &lt; class T1, class T2 &gt; T1 f1( T1 value1, T2 value2 ) { if ( value1 &lt; value2 ) return value1; else return value1*2; } What would be returned by the following f…

1. tert-butyl alcohol + excess Bezene + acid catalysis=intermediate 1 2. interme

1. tert-butyl alcohol + excess Bezene + acid catalysis=intermediate 1 2. intermediate 1 + the oxonium ion of formaldehyde=intermediate 2 3. intermediate 2 + concetrated HCl=interm…

1. the double bond electrons will act as the nucleophile in the first step of th

1. the double bond electrons will act as the nucleophile in the first step of the reaction. 2. the halide ion will act as the nucleophile in the second step of the reaction. 3. th…

1. the double bond electrons will act as the nucleophile in the first step of th

1. the double bond electrons will act as the nucleophile in the first step of the reaction. 2. the halide ion will act as the nucleophile in the second step of the reaction. 3. th…

1. the following data was collected for the decomposition of chlorine monoxide i

1. the following data was collected for the decomposition of chlorine monoxide into chlorine and oxygen at 25 degree Celsius:(show your works) time (s) 0 10 20 30 40 100 200 ClO (…

1. the graph. labels. Draw the program graph. You must use line numbers to label

1. the graph. labels. Draw the program graph. You must use line numbers to label all nodes in Do not use the statements or statement fragments themselves as nodes (5 pts) 2. Compu…

1. the halide ion from HBr will act as the nucleophile in the first step of the

1. the halide ion from HBr will act as the nucleophile in the first step of the reaction 2. the halide ion will act as the nucleophile in the second step of the reaction 3. the re…

1. the halide ion from HBr will act as the nucleophile in the first step of the

1. the halide ion from HBr will act as the nucleophile in the first step of the reaction 2. the halide ion will act as the nucleophile in the second step of the reaction 3. the re…

1. the hydrogen released by the reaction of 90 grams of nitric acid on aluminum,

1. the hydrogen released by the reaction of 90 grams of nitric acid on aluminum, was used to make ammonia. How many grams of ammonia were formed ? 3. How many grams of copper(II) …

1. the hydrogen released by the reaction of 90 grams of nitric acid on aluminum,

1. the hydrogen released by the reaction of 90 grams of nitric acid on aluminum, was used to make ammonia. How many grams of ammonia were formed ? 3. How many grams of copper(II) …

1. the net iconic equation of iron(III) iodide and silver(I) nitrate are combine

1. the net iconic equation of iron(III) iodide and silver(I) nitrate are combined 2.the net iconic equation  of iron(II) nitrate and zinc iodide are combined. 3. the net iconic eq…

1. the net iconic equation of iron(III) iodide and silver(I) nitrate are combine

1. the net iconic equation of iron(III) iodide and silver(I) nitrate are combined 2.the net iconic equation  of iron(II) nitrate and zinc iodide are combined. 3. the net iconic eq…

1. the temperature dependency of the rate constant for a reaction is as follows-

1. the temperature dependency of the rate constant for a reaction is as follows-see data number in the picture below and the question under the picture (show all your calculations…

1. what advantage does crystalline in a polymer offer? what disadvantages? 2. wh

1. what advantage does crystalline in a polymer offer? what disadvantages? 2. why are thermosetting plastics not affected by solvents to the same extent as thermoplastic? 3. what …

1. what differences(s) is(are) there in an a -glycosidic bond and a b -glycosidi

1. what differences(s) is(are) there in an a-glycosidic bond and a b-glycosidic bond? a.   a-glycosidic bonds occur in starch, b-glycosidic bonds occur in cellulose b. a-glycosidi…

1. what gaseous product evolved during the reaction and how is it formed (hint:

1. what gaseous product evolved during the reaction and how is it formed (hint: an excess of BH4 is used so what else might it be able to react with)? 2. What absorption is diagno…

1. what happened to the phenolphthalein indicator during the production of gas?

1. what happened to the phenolphthalein indicator during the production of gas? Explain 2. What products may have formed during the combustian of the gas? Support your answers wit…

1. what happened to the phenolphthalein indicator during the production of gas?

1. what happened to the phenolphthalein indicator during the production of gas? Explain 2. What products may have formed during the combustian of the gas? Support your answers wit…

1. what is GC - describe how the instument is set up and what it is used for 2.

1. what is GC - describe how the instument is set up and what it is used for 2. What is Raoult's law? Why is it used? additionally...some more easy questions: 3. Steel wool or sim…

1. what is the difference between recording 8.1g and 8.100g? whichis better? Ass

1. what is the difference between recording 8.1g and 8.100g? whichis better? Assume a top loading balance was used. 2. Why is it better toweigh a powdered solid by difference than…

1. what is the energy change (in k) when the temperature of 20 g of water increa

1. what is the energy change (in k) when the temperature of 20 g of water increases by 10c A. 20-10x4, 18 B. 20 283x4.18 D. 20x 283x 4.18 C. 1000 1000 2. The lattice enthalpy valu…

1. what is the energy change (in k) when the temperature of 20 g of water increa

1. what is the energy change (in k) when the temperature of 20 g of water increases by 10c A. 20-10x4, 18 B. 20 283x4.18 D. 20x 283x 4.18 C. 1000 1000 2. The lattice enthalpy valu…

1. what is the formula for calculating % relative tolerance for volumetric flask

1. what is the formula for calculating % relative tolerance for volumetric flask 2. For optimal accuracy, do you recommend using smaller or larger sized volumetric flasks. How did…

1. what is the major organic product formed when benzene reacts with one mole of

1. what is the major organic product formed when benzene reacts with one mole of methyl chloride and aluminum chloride? a) toluene b) 1,4-dimethylbenzene c) o-xylene d) m-2 methyl…

1. what is the mass percent concentration of a naoh solution formed by mixing 50

1. what is the mass percent concentration of a naoh solution formed by mixing 50ml of a 25.0% (density = 2.45g/ml) Naohsolution with 10.0 mL of water? 2. at 25C what is the osmoti…

1. what is the minimum volume of boiling water needed to dissolve .2 g of sodium

1. what is the minimum volume of boiling water needed to dissolve .2 g of sodium benzoate? the olubility of sodium benzoate in boiling water is 1 gram per 1.4 mL. about how much s…

1. what is the oxidation number of the indicated species in the following compou

1. what is the oxidation number of the indicated species in the following compounds? sodium in Na2S, Fluorine in F2, Sulfur in H2SO3, Oxygen in H2O, Sulfur in SO3, Hydrogen in Ca(…

1. what is the pH at the equivalence point when 100mL of 0.1 M HNO2 solution (We

1. what is the pH at the equivalence point when 100mL of 0.1 M HNO2 solution (Weak Acid) is titrated with 100 mL of 0.1 M NaOH (Strong Base)? 2. calculate the pH of the 0.30 M NH3…

1. what is the percentage of water in MgSo4×7H20? 2. A hydrate of colbalt (II) c

1. what is the percentage of water in MgSo4×7H20? 2. A hydrate of colbalt (II) chloride, CoCl2, is weigbrd out and dehydrated to determine the formula of the hydrate. Use the foll…

1. what is the rate law that corresponds to the data shown for the reaction A +

1. what is the rate law that corresponds to the data shown for the reaction A + 3B 2C? AI M 0.15 0.15 0.45 0.12 0.24 0.24 Initial Rate M/s 0.10 0.20 1.80 a) Rate kIAlIB] b) Rate -…

1. what is the strongest type of intermolecular force present in NH2CH3? A)dispe

1. what is the strongest type of intermolecular force present in NH2CH3? A)dispersion B)dipole-dipole C)hydrogen bonding D)ion-dipole E) none 2. what is the strongest type of inte…

1. what is the vapor pressure at 20 degrees celsius of a solution of 3.50g of na

1. what is the vapor pressure at 20 degrees celsius of a solution of 3.50g of naphthalene C10H8 in 25.0g of benzene (v.P pure benzene = 74.7 mm Hg at 20 degrees celsius) 2. calcul…