Chemistry concepts and calculations

a) to e) please! Lists of good practice problems from the Harris 8^th ed. text b

a) to e) please! Lists of good practice problems from the Harris 8^th ed. text by chapter, Pdf of problems attached. Reading: all. Exercises: A-D.F.G. Problems: 2,5,8,10,11,18,202…

a) under what circumstances is at necessary to use a roman numeral in the name o

a) under what circumstances is at necessary to use a roman numeral in the name or an ionic compound? b) Name two transition metals which don't require a roman numeral to name thei…

a) use le chatelier\'s principle to explain the different colours found in the f

a) use le chatelier's principle to explain the different colours found in the following equilibrium reactions CO2 + H2 <-> CO + H2O Volume is increased KI <-> K+ + I- …

a) water pH before mixing = pH after mixing= pH change = Solution 10.0 mL 3.22 M

a) water pH before mixing = pH after mixing= pH change =

a) water pH before mixing = pH after mixing= pH change = Solution 10.0 mL 3.22 M

a) water pH before mixing = pH after mixing= pH change =

a) what is the work required on a per u unit of mass in Kj/ kg.? b) is this proc

a) what is the work required on a per u unit of mass in Kj/ kg.? b) is this process isothermal, isobaric or adiabatic? explain 40 points Air (molecular weight 29) is compressed in…

a) you measure the position of a bacterium cell in amicroscope accirate to about

a) you measure the position of a bacterium cell in amicroscope accirate to about 1 micro - meter(x). assume acell volume fo 10 (micro meter)3 and a density of thecell of approx. 1…

a) µ A = µ A 0 + RT ln (x ) x = mole fraction of A = activity coefficient of A T

a) µA = µA0 + RT ln (x ) x = mole fraction of A = activity coefficient of A Therefore, addition of solute causes x to decrease and hence µA also decreases. Statement is true. b) L…

a). Calculate the molar mass in g/mol of the following compound (ammonium dichro

a). Calculate the molar mass in g/mol of the following compound (ammonium dichromate): (NH4)2Cr2O7 b). Calculate the mass, in g, of the following: 0.158 mol IF5 (iodine pentafluor…

a). DH° = 268.2 kJ for the reaction: FeBr 3 (s) ® Fe (s) + 3/2 Br 2 (l). For thi

a). DH° = 268.2 kJ for the reaction: FeBr3 (s) ® Fe (s) + 3/2 Br2 (l). For this reaction,     which have, on the average, stronger bonds, the reactants or the products? b). 1.30 g…

a). How the electron configurations of fluorine (F) and chlorine (Cl) are simila

a). How the electron configurations of fluorine (F) and chlorine (Cl) are similar? b). How are they different? c). How do you expect the electron configurations of bromine (Br) an…

a). Let\'s pretend for a moment that you didnt forget about a teapot on the hot

a). Let's pretend for a moment that you didnt forget about a teapot on the hot stove and actually used hot water to make tea before it all boiled away. If you dissolve 4 g of suga…

a). The concentration of ozone in urban air can be determined by reacting an aqu

a). The concentration of ozone in urban air can be determined by reacting an aqueous solution of potassium iodide (KI). The equation for this process is given below. Determine the…

a). What phase is phase 1? What phase is phase 2? What phase is phase 3? Point A

a). What phase is phase 1? What phase is phase 2? What phase is phase 3? Point A represents? Point B represents? Point C represents? b) As best as you can put a point for Titan's …

a). a solution is prepared by mixing 1.000 mole of methanol(CH3OH) and 2.38 mole

a). a solution is prepared by mixing 1.000 mole of methanol(CH3OH) and 2.38 mole of propanol (CH3CH2CH2OH). what is the composition of the vapor (in mole fractions) at 40 degrees …

a). a solution is prepared by mixing 1.000 mole of methanol(CH3OH) and 2.38 mole

a). a solution is prepared by mixing 1.000 mole of methanol(CH3OH) and 2.38 mole of propanol (CH3CH2CH2OH). what is the composition of the vapor (in mole fractions) at 40 degrees …

a).Find the vapor pressure of water at 29.6 oC. b) Calculate the mass of Mg need

a).Find the vapor pressure of water at 29.6 oC. b) Calculate the mass of Mg needed to produce 80.0 mL of hydrogen gas at STP. c) Why must the difference between the water level in…

a): Given a file that consists of 100,000 records, and each record is 128 bytes.

a): Given a file that consists of 100,000 records, and each record is 128 bytes. No record is allowed to span multiple blocks. - How many records fit in one block? - How many bloc…

a)A calorimeter contains 22.0 mL of water at 14.5 C . When 1.80 g of X (a substa

a)A calorimeter contains 22.0 mL of water at 14.5 C . When 1.80 g of X (a substance with a molar mass of 50.0 g/mol ) is added, it dissolves via the reaction X(s)+H2O(l)X(aq) and …

a)A half-cell that consists of a copper wire in 1.00 M CuNO 3 solution is connec

a)A half-cell that consists of a copper wire in 1.00 M CuNO3 solution is connected by a salt bridge to a half cell containing a 1.00 M X(II) acetate solution and an electrode of m…

a)A very long, straight wire carries a current of 17.1 A out of the screen. An e

a)A very long, straight wire carries a current of 17.1 A out of the screen. An electron outside the wire is 1.29 cm to the right of the central axis of the wire and is moving with…

a)A volleyball shoe weighs 2.72 N. You design a friction test to calculate its c

a)A volleyball shoe weighs 2.72 N. You design a friction test to calculate its coefficient of friction on a level wooden surface, and you find that you need a frictional force of …

a)Acetic acid has a greater solubility in ethanol than acetic anhydride therefor

a)Acetic acid has a greater solubility in ethanol than acetic anhydride therefore it is advantageous to use acetic acid instead of acetic anhydride. b)Acetic acid is more reactive…

a)Assume the reaction 2Fe3+ + Sn2+ -> 2Fe2+ + Sn4+ has a rate law v = k[Fe3+][Sn

a)Assume the reaction 2Fe3+ + Sn2+ -> 2Fe2+ + Sn4+ has a rate law v = k[Fe3+][Sn2+]. If Fe2+ is produced at a rate of 0.12 mol L-1 s-1 when the reactant concentrations are 0.30…

a)Balance the following redox equation in acid. In the blank put the correct sto

a)Balance the following redox equation in acid. In the blank put the correct stochiometric coefficient (0, 1, 2, etc.). (Note: 0 if the species does not appear on that side of the…

a)Calculate the density of oxygen, , under each of the following conditions: STP

a)Calculate the density of oxygen, , under each of the following conditions: STP 1.00 atm and 20.0 c Express your answers numerically in grams per liter. Enter the density at STP …

a)Calculate the pH when 6.80 g of NaBrO is added to 100. mL ofa 0.500M HBr0 solu

a)Calculate the pH when 6.80 g of NaBrO is added to 100. mL ofa 0.500M HBr0 solution (assume no change in volume). pko 8T 8.76 Nabro b) Calculate the pH when 100 mL of 0.50 M NaOH…

a)Compare and contrast the activities associated with selling physical goods onl

a)Compare and contrast the activities associated with selling physical goods online, selling services online, and distributing information/information products online. b)Briefly d…

a)Draw a flowchart to find mass percent of a solution if you were given molality

a)Draw a flowchart to find mass percent of a solution if you were given molality of that solution. Do you need any another additional information? Explain your reasoning. b)Draw a…

a)Explain why NH 4 + /NH 3 is areasonable system to use in preparing 2.0L of pH

a)Explain why NH4+/NH3 is areasonable system to use in preparing 2.0L of pH 10.0 buffer. b) And calclate the concentration ratio[NH3]/[NH4] needed to prepare thisbuffer. c) In thi…

a)For the reaction A ? B + C when [A] is plotted versus the time in minutes a st

a)For the reaction A ? B + C when [A] is plotted versus the time in minutes a straight line is obtained whose slope is -0.021 M/min. What is the concentration of A (in M) after 38…

a)How would you be able to physically separate a solution of 2 different soluble

a)How would you be able to physically separate a solution of 2 different soluble cations by adding another solution? b) Given the following initial conditions: A beaker contains 1…

a)If Mn2+ is present in your unknown, it must be reduced from Mn4+ back to Mn2+

a)If Mn2+ is present in your unknown, it must be reduced from Mn4+ back to Mn2+ prior to testing. This is accomplished by adding H202 under acidic conditions. The H202 acts as a r…

a)If a pregnant woman should be exposed to no more than 20 rad, and a radiation

a)If a pregnant woman should be exposed to no more than 20 rad, and a radiation source gives 51 rad at 534cm, what is the minimum distance she should stand from the radiation sour…

a)If the angle if incidence of light on a diffraction grating is 0.0 degrees wha

a)If the angle if incidence of light on a diffraction grating is 0.0 degrees what is the wavelength of light in (nm) which will be reflected by 38.5 degrees in first order if the …

a)If the angle if incidence of light on a diffraction grating is 0.0 degrees wha

a)If the angle if incidence of light on a diffraction grating is 0.0 degrees what is the wavelength of light in (nm) which will be reflected by 38.5 degrees in first order if the …

a)Implement the following Checkbook member functions by writing the class member

a)Implement the following Checkbook member functions by writing the class member function procedures outside of the class specification a. Open b. WriteCheck c. MakeDeposit d. Cur…

a)In a titration, a sample of H 2 SO 4 solution having a volume of 10.69 mL requ

a)In a titration, a sample of H2SO4 solution having a volume of 10.69 mL required 39.25 mL of 0.195 M NaOH solution for complete neutralization. What is the molarity of the H2SO4 …

a)In terms of this graph, how much energy could you get from burning hydrogen? b

a)In terms of this graph, how much energy could you get from burning hydrogen? b)How much energy would you need to produce the hydrogen from the original water? c)How much energy …

a)Is there a small or large difference between the mass change of the cathode (0

a)Is there a small or large difference between the mass change of the cathode (0.35g) and the mass change of the anode (0.25g).. why is there a difference? b)explain why the CU+^2…

a)Molecular gastronomy is the name given to a variety of cooking techniques that

a)Molecular gastronomy is the name given to a variety of cooking techniques that involve methods and equipment borrowed from chemical laboratories. One of those is cooking “sous v…

a)The activation energy for the isomerization ol cyclopropane to propene is 274

a)The activation energy for the isomerization ol cyclopropane to propene is 274 kJ/mol. By what factor does the rate of this reaction increase as the temperature rises from 232 to…

a)The combustion of propane, C3H8, occurs via the reaction C3H8(g)+5O2(g)3CO2(g)

a)The combustion of propane, C3H8, occurs via the reaction C3H8(g)+5O2(g)3CO2(g)+4H2O(g) with heat of formation values given by the following table: Substance Hf (kJ/mol) C3H8 (g)…

a)There are two types of impurities that can contaminate a sample.What are they?

a)There are two types of impurities that can contaminate a sample.What are they? How do they affect the observed melting points? b)You have synthesized a new compound one which ha…

a)What is an enzyme? b)How does an enzyme speed up a chemical reaction? c)How ca

a)What is an enzyme? b)How does an enzyme speed up a chemical reaction? c)How can an enzyme be denatured and why does that process result in the loss of activity of the enzyme? Pr…

a)What is the total number of p electrons in a single (ground state) K atom? b)W

a)What is the total number of p electrons in a single (ground state) K atom? b)What is the principal quantum number (n) for the valence electrons in arsenic? c)The wave function f…

a)Which of the following statements are false? 1. Dipole-Dipole interactions bet

a)Which of the following statements are false? 1. Dipole-Dipole interactions between molecules are strongest if the molecules possess only induced dipoles. 2. All compounds contai…

a)Write a balanced chemical equation that describes the combustion of one mol of

a)Write a balanced chemical equation that describes the combustion of one mol of oxalic acid. (C2H2O4(s)) b)Write a balanced chemical equation that describes the standard formatio…

a)Write a balanced chemical equation that describes the combustion of one mol of

a)Write a balanced chemical equation that describes the combustion of one mol of oxalic acid. (C2H2O4(s)) b)Write a balanced chemical equation that describes the standard formatio…

a)You have an aqueous solution of a weak monoprotic base with a volume of 300 mL

a)You have an aqueous solution of a weak monoprotic base with a volume of 300 mL and a molarity of 0.150 M. you add to it 0.075 moles of its weak conjugate acid. You then add 6.00…