Chemistry concepts and calculations
117302 questions • Page 21 / 2347
(a) Consider a substance where the intermolecular forces hold the molecules in f
(a) Consider a substance where the intermolecular forces hold the molecules in fixed rigid positions. What is the process called when enough heat has been added to the substance s…
(a) Consider the chlorination of methane, given below: 1 CH4(g) + 4 Cl2(g) 1 CC1
(a) Consider the chlorination of methane, given below: 1 CH4(g) + 4 Cl2(g) 1 CC14(g) + 4 HCl(g) If CH4(9) is decreasing at the rate of 0.940 mol/s, what are the rates of change of…
(a) Consider the combustion of ammonia, given below: 4 NH3(g) + 5 O2(g) 4 NO(g)
(a) Consider the combustion of ammonia, given below: 4 NH3(g) + 5 O2(g) 4 NO(g) + 6 H2O(g) If NH3(g) is decreasing at the rate of 0.450 mol/s, what are the rates of change of O2(g…
(a) Consider the combustion of ammonia, given below: 4 NH3(g) + 5 O2(g) 4 NO(g)
(a) Consider the combustion of ammonia, given below: 4 NH3(g) + 5 O2(g) 4 NO(g) + 6 H2O(g) If NH3(g) is decreasing at the rate of 0.450 mol/s, what are the rates of change of O2(g…
(a) Consider the combustion of butane, given below: 2 C4H10(g) + 13 O2(g) Soluti
(a) Consider the combustion of butane, given below: 2 C4H10(g) + 13 O2(g)
(a) Consider the combustion of butane, given below: 2 C4H10(g) + 13 O2(g) Soluti
(a) Consider the combustion of butane, given below: 2 C4H10(g) + 13 O2(g)
(a) Consider the combustion of ether, given below: 1 C4H10O(g) + 6 O2(g) 4 CO2(g
(a) Consider the combustion of ether, given below: 1 C4H10O(g) + 6 O2(g) 4 CO2(g) + 5 H2O(g) If C4H10O(g) is decreasing at the rate of 0.960 mol/s, what are the rates of change of…
(a) Consider the combustion of ether, given below: 1 C4H10O(g) + 6 O2(g) 4 CO2(g
(a) Consider the combustion of ether, given below: 1 C4H10O(g) + 6 O2(g) 4 CO2(g) + 5 H2O(g) If C4H10O(g) is decreasing at the rate of 0.960 mol/s, what are the rates of change of…
(a) Consider the following two stage process: Stage 1. The system absorbs 83 J o
(a) Consider the following two stage process: Stage 1. The system absorbs 83 J of heat and during this process it had 44 J of work done on it. …
(a) Construct a half reaction for oxidation of acetate into carbon dioxide. (b)
(a) Construct a half reaction for oxidation of acetate into carbon dioxide. (b) Construct a half reaction for reduction of hydrogen ion into hydrogen. (c) Construct a balanced an …
(a) Could 25 g of argon gas in a vessel of volume 1.5dm3 exert a pressure of 2.0
(a) Could 25 g of argon gas in a vessel of volume 1.5dm3 exert a pressure of 2.0 bar at 30°C if it behaved as a perfect gas? If not, what pressurewould it exert? (b)What pressure …
(a) Define the terms rate constant k and half life tau_1/2 as used in chemical k
(a) Define the terms rate constant k and half life tau_1/2 as used in chemical kinetics. (b) Assume that a reaction A + B rightarrow products occurs by second order kinetics and t…
(a) Describe an algorithm to find all the common elements in two sorted lists of
(a) Describe an algorithm to find all the common elements in two sorted lists of numbers. You can describe the algorithm in English or in a pseudocode. For example, for the lists …
(a) Determine the multiplicity for the indicated proton signals. options are sin
(a) Determine the multiplicity for the indicated proton signals. options are singlet, doublet, triplet, quartet, quintet, sextet, septet, octet, nonet, decet **you don't necessari…
(a) Determine the order of the reaction with respect to S2O82-, with respect to
(a) Determine the order of the reaction with respect to S2O82-, with respect to I-, and the overall. (b) What is the value of the rate of constant k? (c)What would be the initial …
(a) Develop a flowchart and then write a C++ program to solve the following prog
(a) Develop a flowchart and then write a C++ program to solve the following program. Upon execution of the program, your name will be displayed, properly centered. (b) The progr…
(a) Dilution formula, M1 V1 = M2 V2 2.90 * 6.00 = M2 * 175 M2 = final concentrat
(a) Dilution formula, M1 V1 = M2 V2 2.90 * 6.00 = M2 * 175 M2 = final concentration = 0.0994 M (b) Moles of AgNO3 = molarity * volume / 1000 = 0.751 * 66.0 / 1000 = 0.0496 mol Fro…
(a) Discuss the difference in the shapes of s and p orbitals. (b) How many elect
(a) Discuss the difference in the shapes of s and p orbitals. (b) How many electrons does each orbital hold? (c) Which of these orbitals do electrons occupy first? (d) Which of th…
(a) Early forms of metal-air cells used zinc as the anode. Zinc oxide is produce
(a) Early forms of metal-air cells used zinc as the anode. Zinc oxide is produced as the cell operates according to the overall equation below. (i) Using the data in the table abo…
(a) Entropy of vaporization of most liquids at 1 bar is all close to 85 J/K*MOL
(a) Entropy of vaporization of most liquids at 1 bar is all close to 85 J/K*MOL (also called Trouton's rule). Provide a physical explanation for the Trouton's rule. (b) Entropy of…
(a) Entropy of vaporization of most liquids at 1 bar is all close to 85 J/K*MOL
(a) Entropy of vaporization of most liquids at 1 bar is all close to 85 J/K*MOL (also called Trouton's rule). Provide a physical explanation for the Trouton's rule. (b) Entropy of…
(a) Examine the energy level diagrams in picture below. Indicate if the label is
(a) Examine the energy level diagrams in picture below. Indicate if the label is correctly assigned to the diagram. if not, correct the mistake and assign the label to the correct…
(a) Explain briefly the circumstances (including any assumptions) in which a bat
(a) Explain briefly the circumstances (including any assumptions) in which a batch reactor is preferred to a flow reactor in a chemical process. (b) An irreversible gas phase reac…
(a) Explain the difference between partial nitrification and full nitrification
(a) Explain the difference between partial nitrification and full nitrification in terms of different substrates and end products. (b) Study the figure above. reading from the val…
(a) Explain why all numerical calculations suffer from \'\'round-off\'\' error a
(a) Explain why all numerical calculations suffer from ''round-off'' error and why in some calculations it is unimportant but in others it dominates the results. (b) Why is it imp…
(a) Find the acceleration of the airboat. ___________m/s 2 (b) Starting from res
(a) Find the acceleration of the airboat. ___________m/s2 (b) Starting from rest, how long does it take the airboat to reach a speed of 16.3 m/s? ___________ s (c) After reaching …
(a) Find the expression for the reversible pressure-volume work of an isothermal
(a) Find the expression for the reversible pressure-volume work of an isothermal van der Waals gas with a constant number of moles (integrate the expression fully from Vi to Vf) (…
(a) Find the expression for the reversible pressure-volume work of an isothermal
(a) Find the expression for the reversible pressure-volume work of an isothermal van der Waals gas with a constant number of moles (integrate the expression fully from Vi to Vf) (…
(a) Find the heat capacity of your calorimeter if the final temperature was in f
(a) Find the heat capacity of your calorimeter if the final temperature was in fact 0.4 degrees higher. (b) Suppose the heat capacity of the calorimeter is in fact 10% less than t…
(a) For 1 m^3 of water and 1 m^3 of air each containing 1 g of benzene (C_6H_6),
(a) For 1 m^3 of water and 1 m^3 of air each containing 1 g of benzene (C_6H_6), give the benzene concentrations in the water in ppb and in the air in m at STP. (b) If you add 1 m…
(a) For a second-order reaction, what quantity, when graphed versus time, will y
(a) For a second-order reaction, what quantity, when graphed versus time, will yield a straight line? The concentration.The square of the concentration. The inverse of the nat…
(a) For reactions (b) and (c) in Problem 4, convert the given E° values (i.e., t
(a) For reactions (b) and (c) in Problem 4, convert the given E° values (i.e., the standard potential) to pe° (assume constant temperature). H2S(aq) + 4H2O = SO4 2- + 10H+ + 8e- E…
(a) For the follwing set of reactions, use a balance on atomic species (as devel
(a) For the follwing set of reactions, use a balance on atomic species (as developed in the handout) to determine all possible independent reactions. CH4 + CO2 <-----> 2CO +…
(a) From the graph we see: Volume of titrant used to reach first equivalence poi
(a) From the graph we see: Volume of titrant used to reach first equivalence point = 10 mL Volume of titrant used to reach second equivalence point = 20 mL (b) At half way of the …
(a) Give the minimum size of the following C++ structure, assuming that char and
(a) Give the minimum size of the following C++ structure, assuming that char and bool values occupy one byte, short values occupy two bytes, int and float values occupy four bytes…
(a) Give the values for n, l, and m for each orbital in the 2Psubshell, Enter yo
(a) Give the values for n, l, and m for each orbital in the 2Psubshell, Enter your answer as sets of values of n, l, and m for different orbitals separated by commas. Separate val…
(a) Given the adjacent T x y phase diagram, apply the Gibbs phase rule to calcul
(a) Given the adjacent T x y phase diagram, apply the Gibbs phase rule to calculate the degrees of freedom. F = 2 - pi + N where pi is the number of phases present, N is the numbe…
(a) Given the following information: Rate = [Br-][C][H+]2 Give the order for eac
(a) Given the following information: Rate = [Br-][C][H+]2 Give the order for each substance in the reaction. Give the overall order for the reaction. By what factor does the rate …
(a) Hammond postulate, (b)Cahn Ingold Prelog rules, (c) Markonivko\'s Rule, (d)
(a) Hammond postulate, (b)Cahn Ingold Prelog rules, (c) Markonivko's Rule, (d) bromonium ion, (e) anti-stereochemistry, (f) halohydrin, (g) oxymercuration-demercuration. (h) hydro…
(a) How did the mL of titrant needed to reach the endpoint using the indicator y
(a) How did the mL of titrant needed to reach the endpoint using the indicator you chose (Part 3) compare with the mL of titrant needed to reach the equivalence point (Part 2)? (b…
(a) How many ether groups are present? (b) How many alcohol groups are present?
(a) How many ether groups are present? (b) How many alcohol groups are present? Classify the alcohols as 1° or 2° or 3° (c) Are there any other oxygen-containing functional groups…
(a) How many grams of CaCl2 are needed to make 250.9 g of a solution that is 30.
(a) How many grams of CaCl2 are needed to make 250.9 g of a solution that is 30.5% (m/m) calcium chloride in water? Note that mass is not technically the same thing as weight, but…
(a) How many grams of CaCl2 are needed to make 549.9 g of a solution that is 29.
(a) How many grams of CaCl2 are needed to make 549.9 g of a solution that is 29.5% (m/m) calcium chloride in water? Note that mass is not technically the same thing as weight, but…
(a) How many grams of CaCl2 are needed to make 798.0 g of a solution that is 32.
(a) How many grams of CaCl2 are needed to make 798.0 g of a solution that is 32.5% (m/m) calcium chloride in water? Note that mass is not technically the same thing as weight, but…
(a) How many grams of CaCl2 are needed to make 993.4 g of a solution that is 31.
(a) How many grams of CaCl2 are needed to make 993.4 g of a solution that is 31.5% (m/m) calcium chloride in water? Note that mass is not technically the same thing as weight, but…
(a) How many grams of solute are present in 80.0 mL of 1.33 MCuSO 4 ? ____g (b)
(a) How many grams of solute are present in 80.0 mL of 1.33 MCuSO4? ____g (b) If 1.50 g of (NH4)2SO4 isdissolved in enough water to form 250. mL of solution, what is themolarity…
(a) How many liters of wine can be held in a wine barrel whose capacity is 50. g
(a) How many liters of wine can be held in a wine barrel whose capacity is 50. gal? ____ L (b) The recommended adult dose of Elixophyllin®, a drug used to treat asthma, is 6 mg/kg…
(a) How many milliliters of 0.145 M HCl are needed to neutralize completely 35.0
(a) How many milliliters of 0.145 M HCl are needed to neutralize completely 35.0 mL of 0.101 M Ba(OH)2 solution? _______ml (b) How many milliliters of 3.50 M H2SO4 are needed to n…
(a) How many milliliters of 0.145 M HCl are needed to neutralize completely 45.0
(a) How many milliliters of 0.145 M HCl are needed to neutralize completely 45.0 mL of 0.101 M Ba(OH)2 solution? ________ml (b) How many milliliters of 2.50 M H2SO4 are needed to …
(a) How many milliliters of 0.165 M HCl are needed to neutralize completely 35.0
(a) How many milliliters of 0.165 M HCl are needed to neutralize completely 35.0 mL of 0.101 M Ba(OH)2 solution? ______ml (b) How many milliliters of 3.50 M H2SO4 are needed to ne…
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