Chemistry concepts and calculations

1)The reaction of benzamide, C6H5CONH2, with LiAlH4 yields which of the followin

1)The reaction of benzamide, C6H5CONH2, with LiAlH4 yields which of the following compounds? A.benzoic acid B.benzonitrile C.benzylamine D.ammonium benzoate E. none of the above 2…

1)The reaction shownis exothermic. If the reaction at equilibrium is cooled, whi

1)The reaction shownis exothermic. If the reaction at equilibrium is cooled, which of the following will be true? N2(g) + O2(g) <====> 2 NO(g) Keq = 5 x 1031 the position of…

1)The solubility of silver(I)phosphate at a given temperature is 0.91 g/L. Calcu

1)The solubility of silver(I)phosphate at a given temperature is 0.91 g/L. Calculate the Ksp at this temperature. After you get your answer, take the negative log and enter that (…

1)The standard electrode potential for the reduction of Eu3+(aq) to Eu2+(aq) is

1)The standard electrode potential for the reduction of Eu3+(aq) to Eu2+(aq) is ?0.43 V. determine which of the following is capable of reducing Eu3+(aq) to Eu2+(aq) under standar…

1)The standard electrode potential for the reduction of Eu3+(aq) to Eu2+(aq) is

1)The standard electrode potential for the reduction of Eu3+(aq) to Eu2+(aq) is ?0.43 V. determine which of the following is capable of reducing Eu3+(aq) to Eu2+(aq) under standar…

1)The standard electrode potential for the reduction of Eu3+(aq) to Eu2+(aq) is

1)The standard electrode potential for the reduction of Eu3+(aq) to Eu2+(aq) is ?0.43 V. determine which of the following is capable of reducing Eu3+(aq) to Eu2+(aq) under standar…

1)To determine the oxidation state of a monoatomic ion, first determine the char

1)To determine the oxidation state of a monoatomic ion, first determine the charge of the ion. The oxidation state will be the same as the charge. For example, I forms the monoato…

1)To prevent the presence of air, noble gases are placed over highly reactive ch

1)To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. A chemical engineer places a mixture of noble gases con…

1)True or False: The objective of the experiment is to determine how concentrati

1)True or False: The objective of the experiment is to determine how concentration affects the rate of the reaction. True False 2)H2O2 (aq) + 2 I-(aq) + 2 H+ 2 H2O(l) + I2 (aq) Wh…

1)Two burettes are set up. The first contains 0.15M NaOH and the second contains

1)Two burettes are set up. The first contains 0.15M NaOH and the second contains an HCl solution of unknown concentration. The initial volume for the NaOH burette is 0.3 ml. The H…

1)Use function GetUserInfo to get a user\'s information. If user enters 20 and H

1)Use function GetUserInfo to get a user's information. If user enters 20 and Holly, sample program output is: #include <stdio.h> #include <string.h> void GetUserInfo(…

1)Using average bond enthalpies, predict which of the following reactions will b

1)Using average bond enthalpies, predict which of the following reactions will be most exothermic: a) C(g) + 2 F2(g) b) CO(g) +3 F2(g) CF4(g) + OF2(g) c) CO2(g) + 4 F2(g) CF4(g) +…

1)Using tabulated K a and K b values, calculate the pH of each of the following

1)Using tabulated Ka and Kb values, calculate the pH of each of the following solutions. a.A solution containing 0.10 M HNO2 and 0.15 M NaNO2 b.25.0 g pure (glacial) acetic acid a…

1)What are the five key cloud characteristics and why are they important? 2)What

1)What are the five key cloud characteristics and why are they important? 2)What are the three cloud service models and how do they differ? 3)What are the pros and cons for busine…

1)What effect does doubling [SO8^2-] have on the rate? By what factor (experimen

1)What effect does doubling [SO8^2-] have on the rate? By what factor (experimental, not rounded to a whole number) does the rate increase? Hint: Rate2/Rae1=? 2)What effect does d…

1)What is a gas? How do we know there is gas pressure on us? How could you demon

1)What is a gas? How do we know there is gas pressure on us? How could you demonstrate this? 2) Would it be easier to drink water with a straw on top or at the foot of Mt. Everest…

1)What is product B in the reaction shown below? 2)Which of the following is the

1)What is product B in the reaction shown below? 2)Which of the following is the organomercurial alcohol formed after cyclopentene undergoes oxymercuration? 3)Which compound is th…

1)What is the concentration, in moles per litre: 60.g ofNaOH in 500. mL solution

1)What is the concentration, in moles per litre: 60.g ofNaOH in 500. mL solution 2) What is the molarity of a 5.0L solution containing 10 molesof Ca(NO3)2 3) Calculate the molar c…

1)What is the correct expression for the equilibrium constant ( K eq) for the re

1)What is the correct expression for the equilibrium constant (Keq) for the reaction between carbon and hydrogen gas to form methane? C(s)+2H2(g) 2)Consider the reaction: CO(g)+Cl…

1)What is the formula for potassium diamminetetrachlorovanadate(III)? a) [KV(NH3

1)What is the formula for potassium diamminetetrachlorovanadate(III)? a) [KV(NH3)2Cl4] b) K2[V(NH3)2Cl4] c) K[V(NH3)2Cl4] d)[KV(NH3)2]Cl4 e)K[V(NH3)2]Cl4 2. The effective atomic n…

1)What is the ionic strength of 0.05M Al 2 (SO4) 3 ? A)0.75M B)0.25M C)1.50M 2)W

1)What is the ionic strength of 0.05M Al2(SO4)3 ? A)0.75M B)0.25M C)1.50M 2)What is the standard state of B in a mixture of 5% A and 95% B (A and B are both volatile liquids)?   A…

1)What is the mass of recovered solids? 2) % yield (percentage of solids recover

1)What is the mass of recovered solids? 2) % yield (percentage of solids recovered): 3) % error? Name: Mass of filter paper: 2. Mass of the empty evaporating dish: B. Mass of the …

1)What is the maximum number of electrons in an atom that can have the following

1)What is the maximum number of electrons in an atom that can have the following quantum numbers? Part A      n = 3, ml = -2 Express your answer as an integer. Number of electrons…

1)What is the name of the element has the following electronic configuration: 1s

1)What is the name of the element has the following electronic configuration: 1s22s22p63s2? 2)Answer the following questions. Since you cannot do superscripts or subscripts in a f…

1)What is the objective of this experiment? (name of the experiment Molecular Ge

1)What is the objective of this experiment? (name of the experiment Molecular Geometry) A) To learn how gases interact with one another. B) To understand molecular orbital theory …

1)What is the pH of a 0.175 mol/L solution of sodium acetate, CH3COONa, at 25oC?

1)What is the pH of a 0.175 mol/L solution of sodium acetate, CH3COONa, at 25oC? (pKa=4.74 at 25oC for CH3COOH.) Give your answer accurate to two decimal places. 2)How many moles …

1)What is the pH of a 0.175 mol/L solution of sodium acetate, CH3COONa, at 25oC?

1)What is the pH of a 0.175 mol/L solution of sodium acetate, CH3COONa, at 25oC? (pKa=4.74 at 25oC for CH3COOH.) Give your answer accurate to two decimal places. 2)How many moles …

1)What is the pH of a buffer prepared by adding 0.405 mol of the weak acid HA to

1)What is the pH of a buffer prepared by adding 0.405 mol of the weak acid HA to 0.608 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66×107. Express th…

1)What is the pH of a solution prepared by mixing 20.0ml of 0.6M acetic acid (Ka

1)What is the pH of a solution prepared by mixing 20.0ml of 0.6M acetic acid (Ka=1.8x10^-5) with 10ml of 1.0M NaOH? Report your answer to two decimal places. 2)What is the pH of a…

1)What is the standard state of A in a mixture of 5% A and 95% B (A and B are bo

1)What is the standard state of A in a mixture of 5% A and 95% B (A and B are both volatile liquids)? A)What is the standard state of A in a mixture of 5% A and 95% B (A and B are…

1)What is the word? These subunits of the Fo structure in FoF1-ATP Synthetase, c

1)What is the word? These subunits of the Fo structure in FoF1-ATP Synthetase, can vary in number from 10 to 15 and form the main portion of the carousel that transfers protons ac…

1)What mass of an aqueous 21.4% potassium chloride solution contains 86.4 g of w

1)What mass of an aqueous 21.4% potassium chloride solution contains 86.4 g of water? 2)A concentrated sulfuric acid solution is 96.0% H2SO4 by mass and has a density of 1.84 g/mL…

1)What\'s the importance of recrystallization? 2) what is the criteria and its a

1)What's the importance of recrystallization? 2) what is the criteria and its applications or importance for sublimation? 3) how do we use melting point to identify a compound? 4)…

1)When CH4(g) reacts with H2O(g) to form H2(g) and CO(g), 206 kJ of energy are a

1)When CH4(g) reacts with H2O(g) to form H2(g) and CO(g), 206 kJ of energy are absorbed for each mole of CH4(g) that reacts. Write a balanced thermochemical equation for the react…

1)When CH4(g) reacts with H2O(g) to form H2(g) and CO(g), 206 kJ of energy are a

1)When CH4(g) reacts with H2O(g) to form H2(g) and CO(g), 206 kJ of energy are absorbed for each mole of CH4(g) that reacts. Write a balanced thermochemical equation for the react…

1)When Fe 3 O 4 (s) reacts with H 2 (g) to form Fe(s) and H 2 O(g) , 151 kJ of e

1)WhenFe3O4(s)reacts withH2(g)to formFe(s)andH2O(g),151kJ of energy areabsorbedfor each mole ofFe3O4(s)that reacts. Write a balanced thermochemical equation for the reaction with …

1)When Fe 3 O 4 (s) reacts with H 2 (g) to form Fe(s) and H 2 O(g) , 151 kJ of e

1)WhenFe3O4(s)reacts withH2(g)to formFe(s)andH2O(g),151kJ of energy areabsorbedfor each mole ofFe3O4(s)that reacts. Write a balanced thermochemical equation for the reaction with …

1)When Fe(s) reacts with Cl 2 (g) to form FeCl 3 (s) , 400 kJ of energy are evol

1)When Fe(s) reacts with Cl2(g) to form FeCl3(s) , 400 kJ of energy are evolved for each mole of Fe(s) that reacts. Write a balanced thermochemical equation for the reaction with …

1)When an alkene undergoes oxymercuration-demercuration, the reaction proceeds w

1)When an alkene undergoes oxymercuration-demercuration, the reaction proceeds with A) anti-Markovnikov orientation and syn addition. B) Markovnikov orientation and anti addition.…

1)When you have completed your calculations you discover that your grams/mL of B

1)When you have completed your calculations you discover that your grams/mL of BaCl2 is much higher than the actual value, what is the most likely source of error. (Assume that al…

1)Which element in the periodic table has - (a) the smallest ionizationenergy ?

1)Which element in the periodic table has -      (a) the smallest ionizationenergy?      (b)the Largestionization energy? 2) Which has the more negative electron affinity,Br or Br…

1)Which element is oxidized in the reaction below? I2O5 (s) + 5CO(g) produces I2

1)Which element is oxidized in the reaction below? I2O5 (s) + 5CO(g) produces I2 (s) + 5CO2 (g) I O C I2 2) Table 20.2 Half Reaction                                               …

1)Which is a spectator ion involved in the reaction of K2CrO4(aq) and Ba(NO3)2(a

1)Which is a spectator ion involved in the reaction of K2CrO4(aq) and Ba(NO3)2(aq)? 2)Currently Severus Snape is only using water as a solvent and thus can use only water soluble …

1)Which of the following bases is/are not strong bases when dissolved in water?

1)Which of the following bases is/are not strong bases when dissolved in water? (You may select more than one chemical): Sr(OH)2, CaO, NH3, KOH, Ba(OH)2. 2)What is the probably th…

1)Which of the following compounds will be more soluble in pentane (C5H12)? Why?

1)Which of the following compounds will be more soluble in pentane (C5H12)? Why? A) pentanol (CH3CH2CH2CH2CH2OH) B) benzene (C6H6) C) acetic acid (CH3CO2H) D) ethyl methyl ketone …

1)Which of the following compounds will be more soluble in pentane (C5H12)? Why?

1)Which of the following compounds will be more soluble in pentane (C5H12)? Why? A) pentanol (CH3CH2CH2CH2CH2OH) B) benzene (C6H6) C) acetic acid (CH3CO2H) D) ethyl methyl ketone …

1)Which of the following describes the compound Zn(CH 3 COO) 2 ? Choose all answ

1)Which of the following describes the compound Zn(CH3COO)2? Choose all answers that apply. The compound is ionic. If the compound dissolved in water it would be a strong electrol…

1)Which of the following describes the process of titration ? When an acid has e

1)Which of the following describes the process of titration ? When an acid has exactly neutralized a base, or vice versa To cause a separation from solution or suspension The tech…

1)Which of the following ions have noble gas electronconfigurations? (Type your

1)Which of the following ions have noble gas electronconfigurations? (Type your answer using the format [NH4]+ forNH4+ and [Ni(CN)4]2- forNi(CN)42-.) (a) Fe2+,Fe3+, Sc3+, Co3+ (b)…

1)Which of the following is false? -The hotter the gas, the higher the pressure.

1)Which of the following is false?      -The hotter the gas, the higher the pressure.    -The colder the gas, the lower the pressure.    -The more gas inside a container, the high…