Chemistry concepts and calculations

Which of the following is a characteristic of the Bohr model of the hydrogen ato

Which of the following is a characteristic of the Bohr model of the hydrogen atom? a)As the energy level (n) increases the adjacent energy levels do not follow a pattern. The ener…

Which of the following is a chemical property of aluminum? A. it is easily malle

Which of the following is a chemical property of aluminum? A. it is easily malleable b. it melts at 660 C c. it conducts electricity d. its density is 2.71 g/cm3 e. it dissolves i…

Which of the following is a correct conclusion that may be drawn from the result

Which of the following is a correct conclusion that may be drawn from the results of Rutherford's gold foil experiments? All positively charged alpha particles pass directly throu…

Which of the following is a correct statement of Newton\'s first law? O An objec

Which of the following is a correct statement of Newton's first law? O An object at rest will stay at rest unless acted on by a net internal force. O An object in motion will cont…

Which of the following is a correct statement regarding electrophilic aromatic s

Which of the following is a correct statement regarding electrophilic aromatic substitution? Select one: The arenium ion intermediate will lose a hydrogen to regain aromaticity, u…

Which of the following is a correct statement? Transition states can sometimes b

Which of the following is a correct statement? Transition states can sometimes be isolated and characterized. Transition states represent energy minima on the reaction coordinate …

Which of the following is a covalent compound? Na_2O Al_2O_3 CaCl_2 CL_2O CaCl A

Which of the following is a covalent compound? Na_2O Al_2O_3 CaCl_2 CL_2O CaCl A system expends from a volume of 1.00 L to 2.00 L against a constant external pressure of 1.00 atm.…

Which of the following is a decompostion reaction? Ca(ClO 3 ) 2 (s) ------> CaCl

Which of the following is a decompostion reaction? Ca(ClO3)2(s) ------> CaCl2(s) + 3O2(g) 2HClO4(aq) + Mg(OH)2(s) -----> Mg(ClO4)2(aq)   + 2H2O(l) MgO(s) + H2O(l) -----> …

Which of the following is a decompostion reaction? MgO (s) + H 2 O (l) -----> Mg

Which of the following is a decompostion reaction? MgO(s) + H2O(l) -----> Mg(OH)2(s) 2HClO4(aq) + Mg(OH)2(s) -----> Mg(ClO4)2(aq)   + 2H2O(l) Ca(ClO3)2(s) ------> CaCl2(s…

Which of the following is a difference between the cells used for electrolysis o

Which of the following is a difference between the cells used for electrolysis of water and electrolysis of molten sodium chloride? Select the correct answer below: A barrier sepa…

Which of the following is a false statement regarding reactionspontaneity? a) A

Which of the following is a false statement regarding reactionspontaneity? a) A very exergonic reaction may not happen quickly. b) A non-spontaneous reaction will proceed spontane…

Which of the following is a feature of a Lewis acid? electron pair donor proton

Which of the following is a feature of a Lewis acid? electron pair donor proton donor proton acceptor electron pair acceptor Which concept describes the observation that acetic ac…

Which of the following is a formation reaction? The reaction K + Cl2 + 2 Q2 KCLO

Which of the following is a formation reaction? The reaction K + Cl2 + 2 Q2 KCLO4 has a degree H = -432 kj/mol. What is the delta H of 2 2KCLO4 2K + CL2 + 4 O2 ? the heat of a cal…

Which of the following is a fundamental SI Unit? Which of the following is a fun

Which of the following is a fundamental SI Unit? Which of the following is a fundamental SI Unit? centimeter milliliter kilogram microsecond In the reaction AgNO3(aq) + HI(aq) AgI…

Which of the following is a gauche conformer? Select the list that places the su

Which of the following is a gauche conformer? Select the list that places the substituents from the highest priority to lowest priority when you try to determine R or S configurat…

Which of the following is a general characteristic of those natural products cla

Which of the following is a general characteristic of those natural products classified as lipids? They are generally insoluble in water and soluble in organic solvents. They are …

Which of the following is a good electrophile? a. ethanol, CH_3CH_2OH b. nitrate

Which of the following is a good electrophile? a. ethanol, CH_3CH_2OH b. nitrate ion, NO_3^- c. nitronium ion, NO_2^+ d. benzoic acid, C_6H_5COOH Which one of the following should…

Which of the following is a guideline for balancing a redox equation in basic so

Which of the following is a guideline for balancing a redox equation in basic solution by the half-reaction method? Question 26 options: Verify that the total number of atoms, and…

Which of the following is a homogeneous mixture? gasoline vegetable oil and wate

Which of the following is a homogeneous mixture? gasoline vegetable oil and water sugar dissolved in water A and C A, B, and C The number of significant figures in 0.066900 times …

Which of the following is a limitation of the Friedel-Crafts reaction? Select on

Which of the following is a limitation of the Friedel-Crafts reaction? Select one: A. The carbocation electrophile can potentially undergo an unwanted rearrangement prior to its b…

Which of the following is a mechanism for an S 2 reaction? Which of the followin

Which of the following is a mechanism for an S 2 reaction? Which of the following is the rate low for the following reaction? A. Rate = k[H_2O] B. Rate = k[H_2O][1-chloro-methylcy…

Which of the following is a mechanism for an S 2 reaction? Which of the followin

Which of the following is a mechanism for an S 2 reaction? Which of the following is the rate low for the following reaction? A. Rate = k[H_2O] B. Rate = k[H_2O][1-chloro-methylcy…

Which of the following is a mechanism for an S 2 reaction? Which of the followin

Which of the following is a mechanism for an S 2 reaction? Which of the following is the rate low for the following reaction? A. Rate = k[H_2O] B. Rate = k[H_2O][1-chloro-methylcy…

Which of the following is a mechanism for an S_N2 reaction? Which of the followi

Which of the following is a mechanism for an S_N2 reaction? Which of the following is the rate law for the following reaction? A. Rate = k[H_2O] B. Rate = k[H_2O][l-chloro-1-methy…

Which of the following is a necessary characteristic of the dye in loading buffe

Which of the following is a necessary characteristic of the dye in loading buffer? a It must be less dense than water b It must be nonpolar c It must be negatively charged BRCA1 m…

Which of the following is a partial explanation for the large number of compound

Which of the following is a partial explanation for the large number of compounds of carbon that are known? A) Carbon can form covalent bonds which do not have lone pairs or unfil…

Which of the following is a partial explanation for the large number of compound

Which of the following is a partial explanation for the large number of compounds of carbon that are known? A. Carbon can form strong ionic bonds with all elements. B. Carbon is s…

Which of the following is a physical property of aspirin? Aspirin can moderate s

Which of the following is a physical property of aspirin? Aspirin can moderate some heart disorders when ingested. Aspirin does not decompose when tightly sealed in a bottle. Aspi…

Which of the following is a possible product of an oxidative cleavage? 38. Carbo

Which of the following is a possible product of an oxidative cleavage? 38. Carboxylic Acid Il. Ketone IlI. Ester A. Ionly B. Ill only C. land II only D. 1,11, and 111 E. I and Ill…

Which of the following is a postulate of the kinetic molecular theory of gases?

Which of the following is a postulate of the kinetic molecular theory of gases? The volume occupied by the individual particles that compose a gas is very smal. However, the dista…

Which of the following is a postulate of the kinetic molecular theory of gases?

Which of the following is a postulate of the kinetic molecular theory of gases? The volume occupied by the individual particles that compose a gas is very small. However, the dist…

Which of the following is a postulate of the kinetic molecular theory of gases?

Which of the following is a postulate of the kinetic molecular theory of gases? The volume occupied by the individual particles that compose a gas is very smal. However, the dista…

Which of the following is a primary alkyl halide? (CH_3)_2CHCH_2Cl (CH_3)_2CClCH

Which of the following is a primary alkyl halide? (CH_3)_2CHCH_2Cl (CH_3)_2CClCH_2CH_3 (CH_3)_2CHCHClCH_3 (CH_3)_2CHCH_2CCl(CH_3)_2 Which of the following is a secondary alkyl hal…

Which of the following is a pure substance: rock air elemental oxygen honey tap

Which of the following is a pure substance: rock air elemental oxygen honey tap water Which of the following is not an intensive property? boiling point temperature melting point …

Which of the following is a reactive intermediate in the reaction of acetone wit

Which of the following is a reactive intermediate in the reaction of acetone with bromine in acetic acid to form 1-bromo-2-propanone? Answer a. enol b. carbanion c. radical d. eno…

Which of the following is a redox reaction? HBr (aq) + KOH (aq) rightarrow H_2 O

Which of the following is a redox reaction? HBr (aq) + KOH (aq) rightarrow H_2 O (l) + KBr (aq) SO_3 (g) + H_2 O (l) rightarrow H_2 SO_4 (aq) HBr (aq) + Na_2 S (aq) rightarrow NaB…

Which of the following is a scientific theory? A) When the pressure on a sample

Which of the following is a scientific theory? A) When the pressure on a sample of oxygen gas is increased10%, the volume of the gas decreases by       10% B) The volume of a gas …

Which of the following is a secondary alcohol? A) B) C) D) Alcohols have higher

Which of the following is a secondary alcohol? A) B) C) D) Alcohols have higher boiling points than alliances of comparable molecular weight because of A) hydrogen bonding. B) dia…

Which of the following is a single displacement(replacement) reaction? 2HClO 4 (

Which of the following is a single displacement(replacement) reaction? 2HClO4(aq) + Mg(OH)2(s) -----> Mg(ClO4)2(aq)   + 2H2O(l) none of these are Cl2(g)   + 2NaI(s)   ------&gt…

Which of the following is a statement of Hess\'s Law? Answer a. If a reaction is

Which of the following is a statement of Hess's Law? Answer a. If a reaction is carried out in a series of steps, the ?H for the reaction will equal the sum of the enthalpy change…

Which of the following is a statement of Hess\'s Law? Answer a. If a reaction is

Which of the following is a statement of Hess's Law? Answer a. If a reaction is carried out in a series of steps, the ?H for the reaction will equal the sum of the enthalpy change…

Which of the following is a statement of Hess\'s Law? Answer a. If a reaction is

Which of the following is a statement of Hess's Law? Answer a. If a reaction is carried out in a series of steps, the ?H for the reaction will equal the sum of the enthalpy change…

Which of the following is a statement of Hess\'s Law? Answer a. If a reaction is

Which of the following is a statement of Hess's Law? Answer a. If a reaction is carried out in a series of steps, the ?H for the reaction will equal the sum of the enthalpy change…

Which of the following is a statement of Hess\'s law? If a reaction is carried o

Which of the following is a statement of Hess's law? If a reaction is carried out in a series of steps, the Delta H for the reaction will equal to of the enthalpy changes for the …

Which of the following is a strong acid? a. HCIO b. HCIO_2 c. HCIO_3 d. HCIO_4 e

Which of the following is a strong acid? a. HCIO b. HCIO_2 c. HCIO_3 d. HCIO_4 e. none of these is a strong acid Which of the following is a strong acid? a. HNO_3 b. H_2S c. HNO_2…

Which of the following is a strong base? CH_3OH HCOOH NH_3 B(OH)_3 Ca(OH)_2 Dete

Which of the following is a strong base? CH_3OH HCOOH NH_3 B(OH)_3 Ca(OH)_2 Determine the energy change for the reaction L_i(s) + 1/2 cl_2(g) rightarrow LiCl(s) from the following…

Which of the following is a strong electrolyte? (a) NaNO_3 (b) H_2S (c) CO_2 (d)

Which of the following is a strong electrolyte? (a) NaNO_3 (b) H_2S (c) CO_2 (d) NH_3 Which of the following gases effuses the fastest? (a) He (b) Ne (c) Ar (d) F_2 Which of the f…

Which of the following is a treatment for hypertension (high blood pressure)? a.

Which of the following is a treatment for hypertension (high blood pressure)? a. acetaminophen b. a diuretic c. nitroglycerin d. prednisone Drugs called beta blockers a. lessen bl…

Which of the following is a true statement about chemical equilibrium? Answer a.

Which of the following is a true statement about chemical equilibrium? Answer a. At equilibrium, the concentration of the reactants and products are equal. b. Equilibrium can neve…

Which of the following is a true statement about the series of compounds from me

Which of the following is a true statement about the series of compounds from methane, CH4, to octane, C8H18 a. All the members of the series are unsaturated. b. All the members o…