Chemistry concepts and calculations

1) If 8.07 g of CuNO3 is dissolved in water to make a 0.760 M solution, what is

1) If 8.07 g of CuNO3 is dissolved in water to make a 0.760 M solution, what is the volume of the solution? 2) Which of the following aqueous solutions will have a chloride concen…

1) If I add 25 mL of water to 125 mL of a 0.15 M NaOH solution, what will the mo

1) If I add 25 mL of water to 125 mL of a 0.15 M NaOH solution, what will the molarity of the diluted solution be? 15 M Na OH1 16 L 2) If I add water to 100 mL of a 0.15 M NaOH so…

1) If I write a class named Worker with a static field named workerNum, and then

1) If I write a class named Worker with a static field named workerNum, and then create 10 objects of type Worker, how many workerNums are created? 2) A static class member belong…

1) If a binary search is used to search for the number 4 in the 11-element array

1) If a binary search is used to search for the number 4 in the 11-element array shown below, which value will the 4 be compared to first?    1 2 3 4 5 6 7 8 9 10 11 12 17 1 7 8 9…

1) If a binary search is used to search for the number 4 in the 11-element array

1) If a binary search is used to search for the number 4 in the 11-element array shown below, which value will the 4 be compared to first?    1 2 3 4 5 6 7 8 9 10 11 12 17 1 7 8 9…

1) If a gardener does not remove spent flowers from a plant, it may stop floweri

1) If a gardener does not remove spent flowers from a plant, it may stop flowering. If spent flowers remain, what does the plant NOT need to produce? a) pollen b) reproductive str…

1) If a gas occupies 2 L at 3 atm, how many liters will itoccupy at 6 atm if the

1) If a gas occupies 2 L at 3 atm, how many liters will itoccupy at 6 atm if the temperature does not change? 2) If a mixture of gases has a total pressure of 200 mm Hg andthe par…

1) If a polymer is prepared from 0.89 g of acrylic acid, and 0.3 mL of 8.0 M NaO

1) If a polymer is prepared from 0.89 g of acrylic acid, and 0.3 mL of 8.0 M NaOH, what will the mass of the "dry" polymer be after all of the water is removed? Assume all reactio…

1) If a sample in the experiment contained a volatile impurity, what VALUE would

1) If a sample in the experiment contained a volatile impurity, what VALUE would be in ERROR? The MASS of the ANHYDROUS SALT or the MASS of the water? And please EXPLAIN WHY. 2) Y…

1) If a superalloy jet engine is heated so that its length in cach direction exp

1) If a superalloy jet engine is heated so that its length in cach direction expands by 1%, what is its percentage change in volume (assume it is roughly cubic)? Hint: Calculate i…

1) If an error is made in the determination of the calorimeter constant, it caus

1) If an error is made in the determination of the calorimeter constant, it causes problems in the determination of the specific heat of the metal and AHneutralization. Using the …

1) If an oxygen molecule had the energy required to dissociate, what could its v

1) If an oxygen molecule had the energy required to dissociate, what could its velocity be? What would its temperature be at this velocity? What wavelength of light could it emit?…

1) If it takes 50.0 mL of 0.50M KOH solution to completely neutralize 35mL of su

1) If it takes 50.0 mL of 0.50M KOH solution to completely neutralize 35mL of sulfuric acid solution (H2SO4), what is the concentration of the H2SO4? (6 points) 2) If it takes 44.…

1) If the absorbance of solution 1 at equilibrium is 0.23 and the absorbance of

1) If the absorbance of solution 1 at equilibrium is 0.23 and the absorbance of the standard solution is 1.23, and the concentration of FeSCN2+ in the standard solution is 1.00 M,…

1) If the anhydride of nitrous acid (HNO2) is N2O3 then what is the anhydride of

1) If the anhydride of nitrous acid (HNO2) is N2O3 then what is the anhydride of nitric acid (HNO3)? Select one: A. NO2 B. N2O3 C. N2O5 D. NO3 2) Second row elements differ from h…

1) If the background is constant for your sample, why bother to subtract it from

1) If the background is constant for your sample, why bother to subtract it from each reading prior to the regression analysis? 2) Under what circumstances would the effect of the…

1) If the barometer reading is recorded to be higher than the actual value. What

1) If the barometer reading is recorded to be higher than the actual value. What effect does this error have on the reported value of the molar mass of the compound? Briefly expla…

1) If the barometer reading is recorded to be higher than the actual value. What

1) If the barometer reading is recorded to be higher than the actual value. What effect does this error have on the reported value of the molar mass of the compound? Briefly expla…

1) If the energies required to separate the solvent and solute molecules are H s

1) If the energies required to separate the solvent and solute molecules are Hsolvent = 25.6 kJ/mol and  Hsolute = 18.9 kJ/mol, what is the enthalpy of solution (Hsoln) if the ent…

1) If the following elements were involved in redox reactions, which noble-gas c

1) If the following elements were involved in redox reactions, which noble-gas configuration would they most likely attain? The elements to arrange are: Be, Na, F, S, Sc, As, Sr. …

1) If the following elements were involved in redox reactions, which noble-gas c

1) If the following elements were involved in redox reactions, which noble-gas configuration would they most likely attain? The elements to arrange are: Be, Na, F, S, Sc, As, Sr. …

1) If the following elements were involved in redox reactions, which noble-gas c

1) If the following elements were involved in redox reactions, which noble-gas configuration would they most likely attain? The elements to arrange are: Be, Na, F, S, Sc, As, Sr. …

1) If the half-life of a reaction increases as the initial concentration of subs

1) If the half-life of a reaction increases as the initial concentration of substance increases, the order of the reaction is _____ 2.5 2 1 3 0 2)   Based on the equilibrium const…

1) If the intermolecular forces between molecules ofliquid (A) are ionic and the

1) If the intermolecular forces between molecules ofliquid (A) are ionic and the intermolecular forces betweenmolecules of liquid (B) are induced dipole-induced dipole forces(cova…

1) If the pressure on 55 mL vol. of a confined gas is increased from 720 mmHg to

1) If the pressure on 55 mL vol. of a confined gas is increased from 720 mmHg to 760 mmHg while temperature increased from 25°C to 34°C. What is the final volume? 2) Using the ide…

1) If the rate law for the clock reaction is: Rate = k [ I - ] [ BrO 3 - ] [H +

1) If the rate law for the clock reaction is:     Rate = k [ I-] [ BrO3-] [H+] A clock reaction is run with the following initial concentrations: [I-]               [BrO3-]       …

1) If the reaction NH 3 (aq)+ H 2 O(l) = NH 4 + (aq) + OH - (aq) has a reaction

1) If the reaction NH3(aq)+ H2O(l) = NH4+(aq) + OH-(aq) has a reaction equilibrium constant of 1.80x10-5, then what is the equilibrium constant be for NH4+ (aq) = NH3(aq) + H+(aq)…

1) If the reaction of sodium metal and water was conducted with 10.0 g of sodium

1) If the reaction of sodium metal and water was conducted with 10.0 g of sodium and 10.0g of water to make sodium hydroxide and hydrogen gas. Then the limiting reagent is which s…

1) If the value of n = 1 ... The quantum number l can have values from ..... to

1) If the value of n = 1 ... The quantum number l can have values from ..... to .... ... The total number of orbitals possible at the n = 1 energy level is ... If the value of l =…

1) If the volume of a flask is 165 mL and the mass of the vapor of the flask is

1) If the volume of a flask is 165 mL and the mass of the vapor of the flask is 0.8569 grams, what is the density of the gas in this flask? At 19 oC, what is the molecular weight …

1) If the water bath only reached a temperature of 94.9C but you still used the

1) If the water bath only reached a temperature of 94.9C but you still used the value of 100C in the calucation, what effect would this error have on the reported value for the mo…

1) If there was a leak in the syringe and gas was escaping as the syringe plunge

1) If there was a leak in the syringe and gas was escaping as the syringe plunger was being compressed, what would this do to the k value? Explain. 2) If the thermometer was calib…

1) If two samples are spotted on a TLC plate and after developing the TLC plate

1) If two samples are spotted on a TLC plate and after developing the TLC plate the two compounds have the same Rf. What conclusions can you draw about the two compounds? 2) Which…

1) If two samples are spotted on a TLC plate and after developing the TLC plate

1) If two samples are spotted on a TLC plate and after developing the TLC plate the two compounds have the same Rf. What conclusions can you draw about the two compounds? 2) Which…

1) If we define the potential energy of the electron as 0 when it is infinitely

1) If we define the potential energy of the electron as 0 when it is infinitely far from the proton, what is its potential energy when D = 0.025 nm (in eV)? Make sure to consider …

1) If you are moving 60 mi/he, how fast are you moving in cm/sec? In ft/min? ple

1) If you are moving 60 mi/he, how fast are you moving in cm/sec? In ft/min? please show work 2) What is the equilibrium concentration of dissolved oxygen at a salinity of 33 and …

1) If you are moving 60 mi/he, how fast are you moving in cm/sec? In ft/min? ple

1) If you are moving 60 mi/he, how fast are you moving in cm/sec? In ft/min? please show work 2) What is the equilibrium concentration of dissolved oxygen at a salinity of 33 and …

1) If you are using 5.25% (mass/mass) bleach solution and you determine that the

1) If you are using 5.25% (mass/mass) bleach solution and you determine that the density of the bleach solution is 1.08 g/mL, how many moles of sodium hypochlorite are present in …

1) If you had not dried the solid, would the calculated percent yield have been

1) If you had not dried the solid, would the calculated percent yield have been higher, lower, or unchanged? Explain 2)Boron trichloride is prepared from the following reaction. 2…

1) If you had not dried the solid, would the calculated percent yield have been

1) If you had not dried the solid, would the calculated percent yield have been higher, lower, or unchanged? Explain 2)Boron trichloride is prepared from the following reaction. 2…

1) If you have five capacitors with capacitances 1.3 x 10 -6 F, 1.7 x 10 -6 F, 4

1) If you have five capacitors with capacitances 1.3 x 10-6 F, 1.7 x 10-6 F, 4.2 x 10-6 F, and two 7.9 x 10-6 F in series. What is the equivalent capacitance of all five? C= .5409…

1) If you mix a solution of SrCl 2 (aq) and K 2 SO 4 (aq) , ____________________

1) If you mix a solution of SrCl2(aq) and K2SO4(aq), __________________________. a precipitate of K2Sr will be formed a precipitate of KCl will be formed no precipitate will be fo…

1) If you mix equal concentrations of reactants and products, in which direction

1) If you mix equal concentrations of reactants and products, in which direction would the following reaction proceed. Right or left? H2SO4(aq) + NH3(aq) <--> NH4^+ (aq) + H…

1) Imagine that saturated solutions of barium chloride (BaCl 2 ) and potassium s

1) Imagine that saturated solutions of barium chloride (BaCl2) and potassium sulfate (K2SO4) are mixed. A white precipitate forms, and the solution is found to contain potassium c…

1) In 2010, the amount of paper recovered for recyclingaveraged 334 pounds for e

1) In 2010, the amount of paper recovered for recyclingaveraged 334 pounds for each person living in the US, according to the American Forest & Paper Association (www.epa.gov)…

1) In 2010, the amount of paper recovered for recyclingaveraged 334 pounds for e

1) In 2010, the amount of paper recovered for recyclingaveraged 334 pounds for each person living in the US, according to the American Forest & Paper Association (www.epa.gov)…

1) In Lab 3, Solubility Rules, students identified ionic salts as soluble or ins

1) In Lab 3, Solubility Rules, students identified ionic salts as soluble or insoluble. The solubility of ionic salts is quantified by an equilibrium constant called Ksp, the solu…

1) In a 1-butanol molecule, what part of the molecule is described as hydrophobi

1) In a 1-butanol molecule, what part of the molecule is described as hydrophobic? 2) Arrange the following alcohols in order of increasing boiling point 3) Provide the major orga…

1) In a 1-butanol molecule, what part of the molecule is described as hydrophobi

1) In a 1-butanol molecule, what part of the molecule is described as hydrophobic? 2) Arrange the following alcohols in order of increasing boiling point 3) Provide the major orga…

1) In a GC-separation of a mixture of three compounds consisting of 1 mol A, 1 m

1) In a GC-separation of a mixture of three compounds consisting of 1 mol A, 1 mol B, and 1 mol C, the peak area (integral) produced by the response of the detector is: Compound A…