Chemistry concepts and calculations
117302 questions • Page 121 / 2347
1. For each of the following reactions, identify which of the reactants is the a
1. For each of the following reactions, identify which of the reactants is the acid, and which is the base, and explain which acid-base definition would be most suitable for the r…
1. For each of the following reactions, indicate whether you would expect the en
1. For each of the following reactions, indicate whether you would expect the entropy of the system to increase or decrease, and explain why. If you cannot tell just by inspecting…
1. For each of the following reactions, write the chemical formulas of all react
1. For each of the following reactions, write the chemical formulas of all reactants and all products in the reaction. a. potassium metal reacts with water to produce potassiu…
1. For each of the following statements, indicate whether it is true or false, a
1. For each of the following statements, indicate whether it is true or false, and briefly explain your reasoning. a) A spontaneous reaction always releases heat. b) A spontaneous…
1. For each of the following substances, state whether the intermolecular forces
1. For each of the following substances, state whether the intermolecular forces are primarily hydrogen bonding, permanent dipole, or temporary dipole. a. H2S b. Cl2O 2. State whe…
1. For each of the following, explain whether the substances can form a solution
1. For each of the following, explain whether the substances can form a solution or not. A. NH3 and NaCl CH4 B. KBr C4H10 C. CO2 2. Classify the following compounds as strong elec…
1. For each of the species below, identify any cyclic conjugated system, then A.
1. For each of the species below, identify any cyclic conjugated system, then A. Determine the number of electrons in a system of cyclic conjugation (zero if no cyclic conjugation…
1. For each pair of conditions below, predict which reaction will be faster if t
1. For each pair of conditions below, predict which reaction will be faster if the mechanism follows a SN2 pathway and give the reason for your answer. A)(a) substitution by iodid…
1. For each part, make a titration curve by plotting pH versus volume of NaOH de
1. For each part, make a titration curve by plotting pH versus volume of NaOH delivered. See the examples in the lecture tect for the basic format. Include all three titration cur…
1. For each run of the iodine clock reaction, 5.00 mL of a 3.91×10-2 M arsenious
1. For each run of the iodine clock reaction, 5.00 mL of a 3.91×10-2 M arsenious acid solution is added to the reaction mixture. The total volume of the reaction mixture is 100.0 …
1. For pipelines to be built in arctic area, what special measures need to be ta
1. For pipelines to be built in arctic area, what special measures need to be taken to protect the pipelines? 2. What was the largest oil spill in the US history? What were the de…
1. For question 1, we have 4 wells that contained about 2ml of a solution that c
1. For question 1, we have 4 wells that contained about 2ml of a solution that contained 5 crystals of cobalt II chloride, and 10ml of ethanol which turned the solution blue. Then…
1. For silver chloride, the reaction is AgCl Ag+ and Cl- and ksp= 1.8 x 10^-
1. For silver chloride, the reaction is AgCl <-> Ag+ and Cl- and ksp= 1.8 x 10^-10 …
1. For the TBOH freezing point determination, what common errors might contribut
1.For the TBOH freezing point determination, what common errors might contribute to a false low value for the freezing point of pure TBOH? TBOH is tert-butyl alcohol 2.Will the fr…
1. For the coordination compound [Ti(H 2 O) 6 ]Cl 2 a) Determine the oxidation s
1. For the coordination compound [Ti(H2O)6]Cl2 a) Determine the oxidation state of the titanium b) How many d electrons does the titanium atom have in this compound? c) Name the c…
1. For the element Tungsten (W) answer the following questions; a) Give its elec
1. For the element Tungsten (W) answer the following questions; a) Give its electron configuration b) How many valence electrons does this element have c) How many core electrons …
1. For the element Tungsten (W) answer the following questions; a) Give its elec
1. For the element Tungsten (W) answer the following questions; a) Give its electron configuration b) How many valence electrons does this element have c) How many core electrons …
1. For the element Tungsten (W) answer the following questions; a) Give its elec
1. For the element Tungsten (W) answer the following questions; a) Give its electron configuration b) How many valence electrons does this element have c) How many core electrons …
1. For the first part of the experiment, in which you are varying the amount of
1. For the first part of the experiment, in which you are varying the amount of tyrosinase, how many milliliters of 15 mM L-DOPA will be in each tube? Prelab Questions 1. For the …
1. For the following chemical reaction, what mass of silver nitrate in grams wil
1. For the following chemical reaction, what mass of silver nitrate in grams will be needed to produce 2.71 mol of calcium nitrate? cai2+2agno3=2 agi+ca(no3)2 2.Given the followin…
1. For the following chemical reaction: HClO2(aq)+NaOH(aq)>>>>>>H2O(l)+NaClO2(aq
1. For the following chemical reaction: HClO2(aq)+NaOH(aq)>>>>>>H2O(l)+NaClO2(aq), write the net ionic equation including phases. 2. What is the oxidation state …
1. For the following compounds find the number of chiral centers and classify ov
1. For the following compounds find the number of chiral centers and classify overall as chiral or achiral. (4 pts) 2. Fill in the squares with the correct configuration (R or S) …
1. For the following pairs of acids, state which one is the stronger acid, and b
1. For the following pairs of acids, state which one is the stronger acid, and briefly explain why: a. H2S and H Se b. PHs and SiH 2. Ion-cyclotron resonance experiments allow sci…
1. For the following processes carried out on an ideal gas, determine whether th
1. For the following processes carried out on an ideal gas, determine whether the associated work is positive, negative, or zero. Briefly explain your reasoning. (a) A gas (the sy…
1. For the following reaction, 5.70 grams of propane (C3H8) are allowed to react
1. For the following reaction, 5.70 grams of propane (C3H8) are allowed to react with 24.2 grams of oxygen gas. 2. For the following reaction, 0.154 moles of barium hydroxide are …
1. For the following reaction, 5.94 g of water are mixed with excess sulfur diox
1. For the following reaction, 5.94 g of water are mixed with excess sulfur dioxide. the reaction yield 21.3 g of sulfurous acid. what is the theoretical yoeld of sulfurous acid i…
1. For the following reaction, 6.90 grams of magnesium nitride are mixed with ex
1. For the following reaction, 6.90 grams of magnesium nitride are mixed with excess water. The reaction yields 11.3 grams of magnesium hydroxide. Mg3N2(s) + 6H2O (l) ---> 3Mg(…
1. For the following reaction, the equilibrium constant Kc is 0.60 at a certain
1. For the following reaction, the equilibrium constant Kc is 0.60 at a certain temperature. If the concentration of NO(g) and NOBr(g) are both 0.50 M,at equilibrium, what is the …
1. For the following reaction, the equilibrium constant Kc is 0.60 at a certain
1. For the following reaction, the equilibrium constant Kc is 0.60 at a certain temperature. If the concentration of NO(g) and NOBr(g) are both 0.50 M,at equilibrium, what is the …
1. For the following, predict the products (if any). If there is no reaction, wr
1. For the following, predict the products (if any). If there is no reaction, write “no rxn”. For the questions where reaction occurs, write: balanced molecular equation balanced …
1. For the formation of a strand of RNA from individual nucleotides , one would
1. For the formation of a strand of RNA from individual nucleotides, one would expect the entropy change in the reaction to be _________ - negative - positive - zero 1b. This entr…
1. For the formula C5H10O2 a) Calculate the IHD b) Draw enantiomers of a compoun
1. For the formula C5H10O2 a) Calculate the IHD b) Draw enantiomers of a compound with this formula. This means that the final pair of molecules must be drawn in 3-D. However, I s…
1. For the gas phase decomposition of nitrosyl chloride at 400 K, the rate of th
1. For the gas phase decomposition of nitrosyl chloride at 400 K, the rate of the reaction is determined by measuring the disappearance of NOCl. At the beginning of the reaction, …
1. For the half-reaction: Cu 2+ + 2e - --> Cu, the standard reduction potential
1. For the half-reaction: Cu2+ + 2e- --> Cu, the standard reduction potential (E°) is +0.3V. For the half-reaction: Fe2+ + 2e- --> Fe, the value of E° is -0.4V. Based on the…
1. For the principle quantum number n = 5, what is the greatest number of values
1. For the principle quantum number n = 5, what is the greatest number of values the spin quantum number can have? a. 5 b. 25 c. 11 d. 2 e. 4 2. A grating is made with 600 slits p…
1. For the reaction 4 HCl(g) + O 2 (g) ---> 2 H 2 O(g) + 2 Cl 2 (g) Delta H° = -
1. For the reaction 4HCl(g) + O2(g) ---> 2H2O(g) + 2Cl2(g) Delta H° = -114.4 kJ and Delta S° = -128.9 J/K The standard free energy change for the reaction of 2.44 moles of HCl(…
1. For the reaction 4A + 3B ----> 5C + 3F you are given 7.0 mol of A and 5.0 mol
1. For the reaction 4A + 3B ----> 5C + 3F you are given 7.0 mol of A and 5.0 mol of B. The reaction does not go to completion. It stops when you have only made 2.0 moles of C. …
1. For the reaction A+ 2B 4. 3C, what is the rate of the reaction in terms of A?
1. For the reaction A+ 2B 4. 3C, what is the rate of the reaction in terms of A? B? C?. 2. Assume the reaction A 4, B is first order in A, with rate constant kr. What is the forwa…
1. For the reaction ICl(g) %g) C(g), K-22x 10 at 25°C. Calculate K, at this temp
1. For the reaction ICl(g) %g) C(g), K-22x 10 at 25°C. Calculate K, at this temperature for lag) + Cl2(g) iCl@ 2. For the reaction SO Clh(g) SO(g) Clh(g), K -0.011 at a particular…
1. For the reaction Substrate --> Product, the addition of an active enzymatic c
1. For the reaction Substrate --> Product, the addition of an active enzymatic cataylst would.... (put an X in the correct column. The first row has been done for you) Would yo…
1. For the reaction between aqueous solutions of calcium chloride and sodium car
1. For the reaction between aqueous solutions of calcium chloride and sodium carbonate, write (a) the balanced molecular equation, (b) the complete ionic equation, (c) the net ion…
1. For the reaction given below 2NO 2 (g) + F 2 (g) 2NO 2 F(g) The units of k we
1. For the reaction given below 2NO2(g) + F2(g) 2NO2F(g) The units of k were determined experimentally to be M-1s-1, which indicate a second-order reaction overall. (a)If the re…
1. For the reaction given below 2NO 2 (g) + F 2 (g) 2NO 2 F(g) The units of k we
1. For the reaction given below 2NO2(g) + F2(g) 2NO2F(g) The units of k were determined experimentally to be M-1s-1, which indicate a second-order reaction overall. (a)If the re…
1. For the reaction in the previous problem, that is, 2HI(g) ? H 2 (g) + I 2 (g)
1. For the reaction in the previous problem, that is, 2HI(g) ? H2(g) + I2(g) Keq = 0.016 Initially a container contains 0.32 M HI and no product. What is the equilibrium concentra…
1. For the reaction in the previous problem, that is, 2HI(g) ? H 2 (g) + I 2 (g)
1. For the reaction in the previous problem, that is, 2HI(g) ? H2(g) + I2(g) Keq = 0.016 Initially a container contains 0.32 M HI and no product. What is the equilibrium concentra…
1. For the reaction, calculate how many moles of the product form when 1.77mol o
1. For the reaction, calculate how many moles of the product form when 1.77mol of Na completely reacts. Assume that there is more than enough of the other reactant. 2Na(s)+O2(g)--…
1. For the reaction: 2NOCl(g) 2NO(g) + Cl2(g), Kc = 1.6 x 10 5 . What are the eq
1. For the reaction: 2NOCl(g) 2NO(g) + Cl2(g), Kc = 1.6 x 10 5 . What are the equilibrium concentrations of each species if 1.0 mole of NOCl is initially placed in an empty 2.0 L …
1. For the system 2 SO2 (g) + O2 (g) 2 SO3 (g) , Delta H is negative for the pro
1. For the system 2 SO2 (g) + O2 (g) 2 SO3 (g) , Delta H is negative for the production of SO3 . Assume that one has an equilibrium mixture of these substances. Predict the effect…
1. For the titration of 25.0 mL of 0.1 M HCl (aq) with 0.1 M NaOH (aq), at what
1. For the titration of 25.0 mL of 0.1 M HCl (aq) with 0.1 M NaOH (aq), at what volume of NaOH (aq) should the equivalence point be reached and why? If an additional 3.0 mL of 0.1…
1. For which of the following reactions is it important that the species collide
1. For which of the following reactions is it important that the species collide with the correct orientation? a. HCl(g) + H2O(l) H2O+(aq) + Cl–(aq) b. Ag+(aq) + Cl–(aq) AgCl(s) c…
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