Chemistry concepts and calculations

Which of following is not a characteristic of a carbonyl group? a. sp^2 hybridiz

Which of following is not a characteristic of a carbonyl group? a. sp^2 hybridized carbon atom b. planar geometry about the carbonyl bond c. carbonyl carbon atom is electrophilic …

Which of following statement is correct? a. The half life of first order reactio

Which of following statement is correct? a. The half life of first order reaction is independent of the initial concentrations of the reactants b. The half-life of a first order a…

Which of following will always increase the internal energy of a system? The sys

Which of following will always increase the internal energy of a system? The system gains energy and performs work. The system gains energy and work is performed on it. The system…

Which of structure is consistent with this H-NMR spectrum? The answer is A, but

Which of structure is consistent with this H-NMR spectrum? The answer is A, but I don't know why.  I'm confused because there are only singlets on the spectrum above, and I would …

Which of t he three AH\'s was the largest? Explain briefly! 1. 2. In reaction 1,

Which of t he three AH's was the largest? Explain briefly! 1. 2. In reaction 1, if we had used 4 grams of NaOH instead of 2 grams, would the heat gained by the solution [# 6] have…

Which of the Following statements about Empirical Formulas isINCORRECT? a) The m

Which of the Following statements about Empirical Formulas isINCORRECT? a) The molecular formula can be the same as the empiricalformula in some situations. b) An Empirical Formul…

Which of the Newman projections most likely corresponds to the position marked \

Which of the Newman projections most likely corresponds to the position marked "A" on the potential energy diagram for rotation about the C2-C3 bond in butane. Which reaction sequ…

Which of the above pictures best represents a solid ionic compound? A) picture (

Which of the above pictures best represents a solid ionic compound? A) picture (a) B) picture (b) C) picture (c) D) picture (d) Calculate the amount of heat (in kJ) required to ra…

Which of the answers below is INCORRECT for diprotic acids and bases? Solutions

Which of the answers below is INCORRECT for diprotic acids and bases? Solutions of H2A are treated as monoprotic to calculate [H+], [HA] and [H2A]. Solutions of A2 is treated as m…

Which of the antacids tested was the best buy and Why? A student carried out the

Which of the antacids tested was the best buy and Why? A student carried out the same experiment using a bottle of "Nick's Famous Antacid Pills". Each bottle cost $1.00 and contai…

Which of the assumptions of the kinetic-molecular theory best explains Dalton\'s

Which of the assumptions of the kinetic-molecular theory best explains Dalton's law of partial pressures? The velocity of gas molecules is proportional to their Kelvin temperature…

Which of the assumptions of the kinetic-molecular theory best explains Dalton\'s

Which of the assumptions of the kinetic-molecular theory best explains Dalton's law of partial pressures? The velocity of gas molecules is proportional to their Kelvin temperature…

Which of the assumptions of the kinetic-molecular theory best explains Dalton\'s

Which of the assumptions of the kinetic-molecular theory best explains Dalton's law of partial pressures? The velocity of gas molecules is proportional to their Kelvin temperature…

Which of the assumptions of the kinetic-molecular theory best explains the obser

Which of the assumptions of the kinetic-molecular theory best explains the observation that a balloon collapses when exposed to liquid nitrogen (which is much colder than a cold w…

Which of the below statements a) through f) are true ? For statements a) through

Which of the below statements a) through f) aretrue? For statements a) through d)use the following reaction: Cu(s) + 2Ag+(aq) --> 2Ag(s) + Cu2+(aq) a) Cu is the reducing agent …

Which of the below statements are correct about the process : gas + solvent satu

Which of the below statements are correct about the process : gas + solvent saturated solution a) The change in enthalpy is usually positive. b) If the temperature of the solution…

Which of the below statements are correct about the process : gas + solvent satu

Which of the below statements are correct about the process : gas + solvent saturated solution a) The change in enthalpyis usually negative. b) If the temperature of thesolution d…

Which of the below statements are correct about the process : gas + solvent satu

Which of the below statements are correct about the process : gas + solvent saturated solution a) The change in enthalpyis usually negative. b) If the temperature of thesolution d…

Which of the below statements concerning ideal gases is false? Question 2 option

Which of the below statements concerning ideal gases is false? Question 2 options: A. An ideal gas is a theoretical gas B. In an ideal gas, the volume of the gas particles is insi…

Which of the binary compounds formed by the following pairs ofelements contain p

Which of the binary compounds formed by the following pairs ofelements contain polar covalent bonds? C and N ___ Na and Cl ___ Al and C ___ N and O ___ Which of the binary compoun…

Which of the chemical equations below are acid-base (proton transfer) reactions?

Which of the chemical equations below are acid-base (proton transfer) reactions? Select all that apply. HI (aq) + NaOH (aq) --> NaI (aq) + H2O (l) 2 Al (s) + 3 Cu(NO3)2 (aq) --…

Which of the chemical equations below are acid-base (proton transfer) reactions?

Which of the chemical equations below are acid-base (proton transfer) reactions? Select all that apply. HI (aq) + NaOH (aq) --> NaI (aq) + H2O (l) 2 Al (s) + 3 Cu(NO3)2 (aq) --…

Which of the compounds above are strong enough acids to react almost completely

Which of the compounds above are strong enough acids to react almost completely with a hydroxide ion (pKa of H2O = 15.74) or with a bicarbonate ion (pKa of H2CO3 = 6.37)? Compound…

Which of the compounds below are strong enough bases to effectively deprotonate

Which of the compounds below are strong enough bases to effectively deprotonate cyclopentane carboxylic acid such that the equilibrium of the reaction will favor the products? Whi…

Which of the compounds below are strong enough bases to effectively deprotonate

Which of the compounds below are strong enough bases to effectively deprotonate para-methylphenol such that the equilibrium of the reaction will favor the products? ich of the com…

Which of the compounds below undergoes SN1 and E1 reactions in aqueous ethanol m

Which of the compounds below undergoes SN1 and E1 reactions in aqueous ethanol most rapidly? a. cyclohexyl bromide b. methyl iodide c. 3-iodo-3-methylpentane d. isopropyl chloride…

Which of the drawings represent different isotopes of the same element, and whic

Which of the drawings represent different isotopes of the same element, and which represents a different element altogether? Which of the drawings represent different isotopes of …

Which of the elements from the list below is considered a nonmetallic element? a

Which of the elements from the list below is considered a nonmetallic element? a. Barium b. Calcium c. Iodine d. Chromium e. Platinum Which ionic compound listed below does not ha…

Which of the elements highlighted in the figure below forms monatomic ions by lo

Which of the elements highlighted in the figure below forms monatomic ions by losing two s electrons? The element in group 1 The element in group 2 The element in group 3 The elem…

Which of the elements highlighted in the figure belowforms monatomic ions by...

Which of the elements highlighted in the figure belowforms monatomic ions by... The figure is: 1 through 18 5 blocks below 1 is blue, on the same line 2 is green, sameline 3 is ye…

Which of the elements listed below would most likely form a nonpolar bond bonded

Which of the elements listed below would most likely form a nonpolar bond bonded to oxygen? Rb Br C O H Of the choices below, which one is not an ionic compound? PbCl_2 MoCl_6 RbC…

Which of the elements, from the second period, should form the least polar bond

Which of the elements, from the second period, should form the least polar bond to hydrogen, based on Pauling electronegativities? is it the lowest electronegativities value has t…

Which of the fallowing describescompetative inhibition? Inhibitor binds to the a

Which of the fallowing describescompetative inhibition? Inhibitor binds to the active site Inhibitor binds covalently near the active site. Enzymes who catalyze the digeston of fo…

Which of the fallowing lipids are glycerol -based? Waxes EicoeaooWs Gtycoilptds

Which of the fallowing lipids are glycerol -based? Waxes EicoeaooWs Gtycoilptds Giycerophospholiptds Sex hormones Which of the following is not an amphlpathlc l'P Sphmgophospholip…

Which of the fallowing represents a chemical change\' heating a sample of ke unt

Which of the fallowing represents a chemical change' heating a sample of ke until it mcks tearing a sheet of paper into tiny pieces burning a sheet of paper All of the above are c…

Which of the figures proves that paired electrons within covalent bonds of molec

Which of the figures proves that paired electrons within covalent bonds of molecules are the source of molecular energy that powers your cells, although some of the energy is unus…

Which of the five basic geometries for molecules and ions has the largest bond a

Which of the five basic geometries for molecules and ions has the largest bond angle? a. linear b. planar triangular c. tetrahedral d. square planar e. octahedral Which of these e…

Which of the folllowing statements about the solubility of 1- propanol, ch3ch2ch

Which of the folllowing statements about the solubility of 1- propanol, ch3ch2ch2oh, and ethanethiol, ch3ch2sh, are true? A) Ethanethiol is more soluble in water because sulfer ha…

Which of the following 4. The following illustrates the digital readout of two d

Which of the following 4. The following illustrates the digital readout of two different balances. balances is more precise? Which is more accurate? (3 point) 0.024 g 0.0180 g Bal…

Which of the following CH_4 samples contains the greatest number of moles of CH_

Which of the following CH_4 samples contains the greatest number of moles of CH_4? 0.356 moles CH_4 4 65 times 10^23 CH_4 molecules 6.78 times 10^1g CH_4 8.90g CH_4 None of the ab…

Which of the following Lipoproteins is used solely for the transport of lipids i

Which of the following Lipoproteins is used solely for the transport of lipids in the blood? 1. Chylomicrons 2. Ultra high density lipoproteins 3. High density lipoproteins 4. Low…

Which of the following NaCl solutions has the highest concentration (molarity) o

Which of the following NaCl solutions has the highest concentration (molarity) of NaCl? 0.0175 mol NaCl in 1 L of solution 0.1 g NaCl in 100 mL of solution 0.5 g NaCl in 500 mL of…

Which of the following Newman projections is a correct representation of the giv

Which of the following Newman projections is a correct representation of the given sawhorse s structure? Which of the following hydrocarbons has the highest boiling point? Which o…

Which of the following Newman projections represents the most stable conformatio

Which of the following Newman projections represents the most stable conformation of 1 2-dibromoethane? What is the product of the following reaction? (A) pentane (B) E-2-pentene …

Which of the following about a reaction is not considered in the field of thermo

Which of the following about a reaction is not considered in the field of thermodynamics? a. direction b. rate c. extent d. energy e. equilibria 2. Most spontaneous reactions are …

Which of the following accounts for the fact that the Friedel - Crafts alkylatio

Which of the following accounts for the fact that the Friedel - Crafts alkylation reaction is overall synthetically less useful than the Friedel-Crafts acylation reaction? The F.C…

Which of the following accounts for the fact that the Friedel - Crafts alkylatio

Which of the following accounts for the fact that the Friedel - Crafts alkylation reaction is overall synthetically less useful than the Friedel-Crafts acylation reaction? The F.C…

Which of the following accounts for the relatively high vapor pressure of diethy

Which of the following accounts for the relatively high vapor pressure of diethyl ether, (CH_3CH_2)O, at 25 degree C? density of the liquid strength of the intermolecular forces s…

Which of the following accurately describes the structure and function of a basi

Which of the following accurately describes the structure and function of a basic chemical component of living things? A. Lipids are large, complex macromolecules composed of chai…

Which of the following accurately identifies the species in the reaction: NH 2 1

Which of the following accurately identifies the species in the reaction: NH21-(aq)        +        H2O(l)                  NH3(aq)      +              OH(aq)1- A. Base           …