Chemistry concepts and calculations

Which of the following electron transfer reactions is not correctly categorized?

Which of the following electron transfer reactions is not correctly categorized? A. 2 Mg (s) + O2 (g) => 2 MgO (s); combination reaction B. 2 PbO (s) => 2 Pb (s) + O2 (g); d…

Which of the following electronic transitions are allowed for thehydrogen atom?

Which of the following electronic transitions are allowed for thehydrogen atom? a. 2s -> 1s b. 2p -> 1s c. 3d -> 2p d. 5d -> 3s e. 5p -> 3s Also... is 0 change in n…

Which of the following elementary steps is bimolecular? Select True or False In

Which of the following elementary steps is bimolecular? Select True or False In the reaction, , oxygen and True False Select True or False: The equilibrium constant foe the chemic…

Which of the following elements are semiconductors? C, Si, Ge, Sn C and Si only

Which of the following elements are semiconductors? C, Si, Ge, Sn C and Si only Si and greaterthanorequalto only greaterthanorequalto and Sn only None of these elements are semico…

Which of the following elements can be isolated by electrolysis in the manner de

Which of the following elements can be isolated by electrolysis in the manner described? a. Oxygen at the cathode when an aqueous solution of potassium nitrate is electrolyzed. b.…

Which of the following elements can form compounds with an expanded octet? Br F

Which of the following elements can form compounds with an expanded octet? Br F O U Give the approximate bond angle for a molecule with a tetrahedral shape. 60 degree 109.5 degree…

Which of the following elements has the lowest ionization energy Rb Na C F Which

Which of the following elements has the lowest ionization energy Rb Na C F Which of the following is not true about none metals? Compounds entirely of none metals are molecular co…

Which of the following elements has the smallest atomic radius? _____ A) Li B) N

Which of the following elements has the smallest atomic radius? _____ A) Li B) Ne C) Rb D) Sr E) Xe Which of the following elements has the largest atomic radius? A) Li B) Ne C) R…

Which of the following elements have a ground-state electron configuration that

Which of the following elements have a ground-state electron configuration that can be described by a 2P term? a. Li b. Be c. B d. C e. N 2) Of the following listed methods, what …

Which of the following elements is considered a metal? Sulfur Chalone Phosphorou

Which of the following elements is considered a metal? Sulfur Chalone Phosphorous Magnesium Nitrogen Which ionic compound listed below does not have a correct formula? SrSO_4 Al(N…

Which of the following elements is likely form a substitutional solid solution w

Which of the following elements is likely form a substitutional solid solution with the highest amount of substitution (i.e. highest solubility) in Al which has a FCC lattice?    …

Which of the following energies of light has the longest wavelength? 6.25 x 10 -

Which of the following energies of light has the longest wavelength? 6.25 x 10-14 J 9.02 x 10-20 J 4.22 x 10-18 J 6.14 x 10-19 J 2.85 x 10-19 J Which of the following transitions …

Which of the following energy transitions of the hydrogen atom emits light in th

Which of the following energy transitions of the hydrogen atom emits light in the visible region? n = 5 to n = 3 n = 2 to n =1 n = 5 to n =1 n = 5 to n = 2 n = 4 to n = 1 n = 2 to…

Which of the following equalibria will be affected by changes in container volum

Which of the following equalibria will be affected by changes in container volume? 2SO_2(g) + O_2(g) doubleheadarrow 2SO_3(g) N_2(g) + O_2(g) doubleheadarrow 2NO(g) H_2(g) + l_2(g…

Which of the following equations correctly describes the combustion of CH 4 and

Which of the following equations correctly describes the combustion of CH4 and O2 to produce water (H2O) and carbon dioxide (CO2)? CH4 + 2O2 %u2192 CO2 + 2H2O CH4 + O2 %u2192 CO2 …

Which of the following equations is not balanced? C 2 H 6 + 5O 2 -->2CO 2 + 3H 2

Which of the following equations is not balanced? C2H6 + 5O2 -->2CO2 + 3H2O 4P4 + 5S8 --> 4P4S10 2KClO3 ---> 2KCl + 3O2 P4 + 5O2 -->P4O10 4Al + 3O2 --> 2Al2O3 Which…

Which of the following equations listed below corresponds to the standard molar

Which of the following equations listed below corresponds to the standard molar enthalpy of formation delta Hdegree for NH_4NO_3 NH_4^+ (aq) + NO^-_3 (aq) rightarrow NH_4NO_3 (s) …

Which of the following equations listed below corresponds to the standard molar

Which of the following equations listed below corresponds to the standard molar enthalpy of delta H^0 f for NH_4 NO_3? NH^+_4 (aq) + NO_3 (aq) rightarrow NH_4 NO_3 (s) NH_3 (g) + …

Which of the following equations represents the behavior of HCO 3 as a base? Whi

Which of the following equations represents the behavior of HCO3 as a base? Which of the following equations represents the behavior of HCO3 as a base?                 A. HCO3(aq)…

Which of the following equations represents the proper net ionic equation for th

Which of the following equations represents the proper net ionic equation for the complete neutralization reaction between the strong base KOH (aq) and the weak acid HF (aq)? Chec…

Which of the following equilibria will be affected by changes in container volum

Which of the following equilibria will be affected by changes in container volume? i only b. ii only c. i and ii d. ii and iii e. i, ii. and iii 12. Consider the equilibrium: 2NH_…

Which of the following equilibria would be affected by volume changes at constan

Which of the following equilibria would be affected by volume changes at constant temperature? Which of the following equilibria would be affected by volume changes at constant te…

Which of the following equilibria would not be affected by pressure changes at c

Which of the following equilibria would not be affected by pressure changes at constant temperature? A) CO(g) + 1/2O_2(g) CO_2(g) B) CaCO_3(s) CaO(s) + CO_2(g) C) 2H_2(g) + O_2(g)…

Which of the following esters, upon hydrolysis, produces a three-carbon alcohol

Which of the following esters, upon hydrolysis, produces a three-carbon alcohol as one of the products? propyl pentanoate decyl propanoate ethyl 3-hydroxyoctanoatc pentyl decanoat…

Which of the following ethers has the highest boiling point? CH_3OCH_3 CH_3CH_2O

Which of the following ethers has the highest boiling point? CH_3OCH_3 CH_3CH_2OCH_2CH_3 CH_3CH_2CH_2OCH_2CH_2CH_3 CH_3CH_2CH_2CH_2OCH_2CH_2CH_2CH_3 All have the same boiling poin…

Which of the following experimental methods cannot be used to measure the rate o

Which of the following experimental methods cannot be used to measure the rate of a reaction? measurement of the change in the partial pressure of a gas-phase reactant over time m…

Which of the following experimental methods cannot be used to measure the rate o

Which of the following experimental methods cannot be used to measure the rate of a reaction? a. measurement of the change in the partial pressure of a gas-phase reactant over tim…

Which of the following experimental results for the photoelectric effect suggest

Which of the following experimental results for the photoelectric effect suggests that light can display particle-like behavior? A.The number of emitted electrons is proportional …

Which of the following experimental results for the photoelectric effect suggest

Which of the following experimental results for the photoelectric effect suggests that light can display particle-like behavior? A.The number of emitted electrons is proportional …

Which of the following explain how and why the rate of evaporation of a pure liq

Which of the following explain how and why the rate of evaporation of a pure liquid depends on the intermoleculer forces? 1. the weaker the intermoleculer forces, the greater the …

Which of the following explains the insolubility of lipids in water? Lipids are

Which of the following explains the insolubility of lipids in water? Lipids are polar molecules. The polar portion of lipids is much larger than the nonpolar portion. The polar po…

Which of the following explains why aldehydes are more reactive as electrophiles

Which of the following explains why aldehydes are more reactive as electrophiles than ketones? A. In aldehydes the extra alkyl group increases the stability of the ?- carbon atom …

Which of the following explains why aldehydes are more reactive as electrophiles

Which of the following explains why aldehydes are more reactive as electrophiles than ketones? A. In aldehydes the extra alkyl group increases the stability of the ?- carbon atom …

Which of the following explanation best describes the differences between the mo

Which of the following explanation best describes the differences between the molecules labeled "5", "HPSensor 1", HPSensor 2", and "HPSensor 3"? The extent of conjugation increas…

Which of the following expressions correctly sets up the calculation needed to d

Which of the following expressions correctly sets up the calculation needed to determine the number of grams of KCIO3 produced during the reaction of 0.150 moles of Cl2 in excess …

Which of the following expressions is the correct equilibrium-constant expressio

Which of the following expressions is the correct equilibrium-constant expression for the equilibrium between dinitrogen tetroxide and nitrogen dioxide? 3N2O4(g) INCLUDEPICTURE "h…

Which of the following expressions is the correct equilibrium-constant expressio

Which of the following expressions is the correct equilibrium-constant expression for the reaction below? [H^+][HCO^-_3] [CO_2]/[H^+][HCO_3^-] [H^+][HCO_3^-]/[CO_2][H_2O] [CO_2][H…

Which of the following factors affect the initial rate of a chemical reaction? T

Which of the following factors affect the initial rate of a chemical reaction? The nature of the reactants. The concentration of the reactants. The size of the solid reactant part…

Which of the following factors affect the resolution (separation) of two compoun

Which of the following factors affect the resolution (separation) of two compounds: (A) nature of the stationary phase; (B) eluent composition; (C) amount of sorbent used; (D) col…

Which of the following factors affect the resolution (separation) of two compoun

Which of the following factors affect the resolution (separation) of two compounds: (A) nature of the stationary phase; (B) eluent composition; (C) amount of sorbent used; (D) col…

Which of the following factors affect the resolution (separation) of two compoun

Which of the following factors affect the resolution (separation) of two compounds: (A) nature of the stationary phase; (B) eluent composition; (C) amount of sorbent used; (D) col…

Which of the following factors best explain why the melting points of saturated

Which of the following factors best explain why the melting points of saturated fats increase with increasing molecular weight? decreased intermolecular van der Waals interactions…

Which of the following factors contribute to the large negative G° for the hydro

Which of the following factors contribute to the large negative G° for the hydrolysis of mixed anhydrides of phosphoric and carboxylic acids such as acetyl phosphate and 1,3-bisph…

Which of the following factors contributes to the lower ionization energy of the

Which of the following factors contributes to the lower ionization energy of the higher atomic number elements in a family in the periodic table? A. greater distance of outer elec…

Which of the following factors directly impacts the rate at which a liquid evapo

Which of the following factors directly impacts the rate at which a liquid evaporates? Select all that apply. Strength of intermolecular forces An open or dosed container Mole fra…

Which of the following factors increases the rate of a chemical reaction by decr

Which of the following factors increases the rate of a chemical reaction by decreasing the activation energy barrier? The substrate in an enzyme-controlled biological reaction is …

Which of the following features of the structure of double-stranded DNA is most

Which of the following features of the structure of double-stranded DNA is most important in recognition of specific base sequences by most sequence–specific DNA-binding proteins?…

Which of the following features of the structure of double-stranded DNA is most

Which of the following features of the structure of double-stranded DNA is most important in recognition of specific base sequences by most sequence–specific DNA-binding proteins?…

Which of the following features should an effective transition state analog inhi

Which of the following features should an effective transition state analog inhibitor have (select all that apply)? (Hint: be sure you know what type of inhibitor transition state…

Which of the following features should an effective transition state analog inhi

Which of the following features should an effective transition state analog inhibitor have (select all that apply)? (Hint: be sure you know what type of inhibitor transition state…