Chemistry concepts and calculations

a) Calculate the change in entropy (deltaS) when one mole of diamond is heated f

a) Calculate the change in entropy (deltaS) when one mole of diamond is heated from a temperature of 0 K to 400 K at a constant pressure of 1 bar. The temperature-dependent heat c…

a) Calculate the change in entropy (deltaS) when one mole of diamond is heated f

a) Calculate the change in entropy (deltaS) when one mole of diamond is heated from a temperature of 0 K to 400 K at a constant pressure of 1 bar. The temperature-dependent heat c…

a) Calculate the change in entropy (deltaS) when one mole of diamond is heated f

a) Calculate the change in entropy (deltaS) when one mole of diamond is heated from a temperature of 0 K to 400 K at a constant pressure of 1 bar. The temperature-dependent heat c…

a) Calculate the concentration of benzoyl peroxide required to prepare polystyre

a) Calculate the concentration of benzoyl peroxide required to prepare polystyrene with a number average molecular weight of 750 kg.mol1 by bulk polymerization at 60 °C (1 point) …

a) Calculate the density in g/L of the vapor of your unknown at experimental tem

a) Calculate the density in g/L of the vapor of your unknown at experimental temperature and pressure. b) What would the density of the apor of your unknown be at STP assuming tha…

a) Calculate the grams of acetic acid (CH 3 COOH) that would be present in one l

a) Calculate the grams of acetic acid (CH3COOH) that would be present in one liter of your unknown solution. Use the mean value of the molarity from your sample. b) Calculate the …

a) Calculate the heat energy (q) when 12.0 g of water is heated from 20oC to 100

a) Calculate the heat energy (q) when 12.0 g of water is heated from 20oC to 100oC. The specific heat for water is given in your textbook. b) Is the process of heating water exoth…

a) Calculate the pH of a 0.116 M solution of ethylenediamine (H2NCH2CH2NH2). The

a) Calculate the pH of a 0.116 M solution of ethylenediamine (H2NCH2CH2NH2). The pKa values for the acidic form of ethylenediamine ( H3NCH2CH2NH3 ) are 6.848 (pKa1) and 9.928 (pKa…

a) Calculate the ratio of the resistance of copper to that of carbon at the rais

a) Calculate the ratio of the resistance of copper to that of carbon at the raised temperature. Coefficient of thermal expansion for copper is 0.00680C while for carbon -0.00050C.…

a) Calculate the w/w% of calcium chloride (CaCl2) in an aqueous solution that is

a) Calculate the w/w% of calcium chloride (CaCl2) in an aqueous solution that is 2.00 M of calcium chloride and has a density of 1.17 g/mL. b) w/v% of CaCl2 for the above solution…

a) Can you use IR spectroscopy to distinguish between the D 2 O (heavy water use

a) Can you use IR spectroscopy to distinguish between the D2O (heavy water used to moderate neutrons in nuclear reactors), H2O and HOD species in solution? b) Can you use IR spect…

a) Carbonate ion is either a Brønsted-Lowry acid or a Brønsted-Lowry base. If it

a) Carbonate ion is either a Brønsted-Lowry acid or a Brønsted-Lowry base. If it is an acid, what is it's conjugate base? On the other hand, if it is a base what is it's conjugate…

a) Check all of the following that are correct statements, where E stands for ym

a) Check all of the following that are correct statements, where E stands for ymc2. Read each statement very carefully to make sure that it is exactly correct The definition of wo…

a) Classify the following changes in each unbalanced chemical equation as oxidat

a) Classify the following changes in each unbalanced chemical equation as oxidation or reduction, using the definitions in the introduction. Drag the appropriate items to their re…

a) Complete and balance the following half-reaction: Mo3+(aq)Mo(s) (acidic solut

a) Complete and balance the following half-reaction: Mo3+(aq)Mo(s) (acidic solution) Express your answer as a chemical equation. Identify all of the phases in your answer. Indicat…

a) Consider the complexes shown below. For the six coordinate complexes, draw th

a) Consider the complexes shown below. For the six coordinate complexes, draw the possible d electron configurations (high spin vs. low spin) in an octahedral ligand field. For th…

a) Consider the enzymes in the table below and answer the following questions. A

a) Consider the enzymes in the table below and answer the following questions. Answers should be brief (1-3 sentences) (i) Which enzyme has the highest affinity for substrate? How…

a) Consider the following reaction at 298K. 2 Cu 2+ (aq) + Hg (l) ------> 2 Cu +

a) Consider the following reaction at 298K. 2 Cu2+(aq) + Hg (l) ------>2 Cu+(aq) + Hg2+(aq) Which of the following statements are correct? Choose all that apply. n = 1 mol elec…

a) Consider the following reaction: A + 2B 3 C Keq= 2.37x106 What is the value o

a) Consider the following reaction: A + 2B 3 C Keq= 2.37x106 What is the value of the rate constant if the reaction is multipled by 3? Express your answer in scientific notation. …

a) Consider the mixed aldol condensation reaction of 2,2-dimethyl-3-pentanone (s

a) Consider the mixed aldol condensation reaction of 2,2-dimethyl-3-pentanone (shown below) and benzophenone (shown below) in the presence of sodium hydroxide. Provide the expecte…

a) Convert the following energy units. a) 755 kJ to J? b) 2.90 × 103 kcal to kJ?

a) Convert the following energy units. a) 755 kJ to J? b) 2.90 × 103 kcal to kJ? c) 6.82 × 106 J to kcal -A 28.00 g sample of a substance is initially at 28.8 °C. After absorbing …

a) Create a class named BankAccount with fields that hold an account number, the

a) Create a class named BankAccount with fields that hold an account number, the owner's name, and the account balance. Include a constructor that initializes each field to approp…

a) Create a class named BankAccount with fields that hold an account number, the

a) Create a class named BankAccount with fields that hold an account number, the owner's name, and the account balance. Include a constructor that initializes each field to approp…

a) Decode the following message using the probability mapping for the message ch

a) Decode the following message using the probability mapping for the message character set, and the Decoding trace. In other words, using the probability mapping, identify which …

a) Define the class bankAccount to store a bank customer\'s account number and b

a) Define the class bankAccount to store a bank customer's account number and balance. Suppose that account number is of type int, and balance is of type double. Your class should…

a) Define the class bankAccount to store a bank customer’s account number and ba

a) Define the class bankAccount to store a bank customer’s account number and balance. Suppose that account number is of type int, and balance is of type double. Your class should…

a) Defise a series of solubility rules related to anions to summarize your exper

a) Defise a series of solubility rules related to anions to summarize your experimental evidence. HINT: for anions that form primarily soluble salts, a rule might take the form: a…

a) Describe the chemistry that was occuring in the experiment between the time w

a) Describe the chemistry that was occuring in the experiment between the time when solutions A & B were mixed and STOP TIME b) For Kinetic Trial 2, Alicia was distracted when…

a) Describe the distinguishing features of (i) polar, and (ii) non-polar mineral

a) Describe the distinguishing features of (i) polar, and (ii) non-polar mineral surfaces. 4 points) b) Discuss how the polar or non-polar nature of the surface influences the abi…

a) Describe the high level steps involved for decryption using a Feistel cipher.

a) Describe the high level steps involved for decryption using a Feistel cipher. b) Modify the pseudo code provided in the lecture notes that describe encryption using a Feistel n…

a) Describe the process for the emission of an LMM Auger electron from the surfa

a) Describe the process for the emission of an LMM Auger electron from the surface of a sample. An XPS electron was found to have a kinetic energy of 1050.5 eV when a Mg K source …

a) Design a greedy algorithm that solves the problem; describe your algorithm wi

a) Design a greedy algorithm that solves the problem; describe your algorithm with clear pseudocode; and prove the time efciency class of your algorithm. If x,y are two adjacent e…

a) Determine the amount of energy transferred as heat requiredto melt 3 mol of i

a) Determine the amount of energy transferred as heat requiredto melt 3 mol of ice at 0°C, heat the liquid water to 100°C, and then vaporize theliquid water at 100°C. All processe…

a) Determine the half-cell reactions at the anode for the cell Cd(s)|Cd 2+ (aq,a

a) Determine the half-cell reactions at the anode for the cell Cd(s)|Cd 2+ (aq,a Cd 2+ =0.150)||Cl ? (aq,a Cl ? =0.0100|AgCl(s)|Ag(s) Express your answers as a chemical expression…

a) Determine the mass (in grams) of bromine that will result in a change in ener

a) Determine the mass (in grams) of bromine that will result in a change in energy of -2.58 kJ when bromine reacts with excess potassium iodide according to the following balanced…

a) Determine the molecular formula (MF CaHar) from the molecular ion on the MS u

a) Determine the molecular formula (MF CaHar) from the molecular ion on the MS using the Rule 13 where (MW / 13) = n + r. Since the M +2 peak indication that the compound contain …

a) Determine the reaction order with respect to OH - . [OH-] = 1 b) Determine th

a) Determine the reaction order with respect to OH-. [OH-] = 1 b) Determine the reaction order with respect to HBPB2-. [HBPB2-] = 1 c) Write the rate law for the given equation. R…

a) Determine whether the van der Waals equation of state admits a critical point

a) Determine whether the van der Waals equation of state admits a critical point. If so, at what volume, pressure and temperature? Leave in terms of a and b. (if no, put NA in Bla…

a) Draw your complete reaction, including the formation of the Grignard reagent

a) Draw your complete reaction, including the formation of the Grignard reagent and the reaction with your carbonyl compound. Below each reagent, write its molecular weight and de…

a) Enantiomers have different melting points b) Solid diastereomers can be separ

a) Enantiomers have different melting points b) Solid diastereomers can be separated by fractional crystallization on the basis of their different solubility in a given solvent. c…

a) Exactly 50.00 mL of a weak acid HA is titrated with 0.1000M NaOH. If the equi

a) Exactly 50.00 mL of a weak acid HA is titrated with 0.1000M NaOH. If the equivalence point is reached after 39.30 mL of base is added, what is the original concentration of the…

a) Excess imidazole was removed using a HiPrep 26/10 desalting column (GE Health

a) Excess imidazole was removed using a HiPrep 26/10 desalting column (GE Healthcare) that was pre-equilibrated with 25 mM Tris-HCl (pH 7.5), 50 mM KCl, and 10 mM EDTA. Ignoring t…

a) Excess imidazole was removed using a HiPrep 26/10 desalting column (GE Health

a) Excess imidazole was removed using a HiPrep 26/10 desalting column (GE Healthcare) that was pre-equilibrated with 25 mM Tris-HCl (pH 7.5), 50 mM KCl, and 10 mM EDTA. Ignoring t…

a) Explain how a sodium ion (Na+ 1) is created, its stability and why it takes o

a) Explain how a sodium ion (Na+ 1) is created, its stability and why it takes on this charge. List the following values to help you answer this question: the size of the sodium i…

a) Explain how you would prepare a buffer with a pH = 7.2 using carbonic acid H2

a) Explain how you would prepare a buffer with a pH = 7.2 using carbonic acid H2CO3 and NaHCO3 solutions. What are concentrations and volumes of the two solutions you would use? (…

a) Explain in bullet points how to prepare the dilution series. c) Calculate the

a) Explain in bullet points how to prepare the dilution series. c) Calculate the mass % of copper in the alloy. d) If the cuvette used to measure the dissolved sample had finger s…

a) Explain in bullet points how to prepare the dilution series. c) Calculate the

a) Explain in bullet points how to prepare the dilution series. c) Calculate the mass % of copper in the alloy. d) If the cuvette used to measure the dissolved sample had finger s…

a) Find q, w , E when a system gains 10.0 kJ of heat from the surroundings and d

a) Find q, w , E when a system gains 10.0 kJ of heat from the surroundings and does 14.0 KJ of work on the surroundings. b) If the standard enthalpy of reaction , Ho , is -137.0 k…

a) Find the thermal energy in 1 liter of He atoms at room temperature (300 K) an

a) Find the thermal energy in 1 liter of He atoms at room temperature (300 K) and atmospheric pressure. Do the same for 800 K. Note the effect of temperature. b) Repeat (a) for O2…

a) For a reaction 2H+ + 2e- + 0.5O2 = H2O. Standard E = 1.23. If the electrode p

a) For a reaction 2H+ + 2e- + 0.5O2 = H2O. Standard E = 1.23. If the electrode potential is reduced to 1.00V, will this bias the reaction in the forward or reverse direction? b) F…