Chemistry concepts and calculations
117302 questions • Page 2011 / 2347
Which aqueous solution will have the lowest freezing point? 0.040 m glucose 0.02
Which aqueous solution will have the lowest freezing point? 0.040 m glucose 0.025 m KBr 0.020 m Nacl 0.020 m BaCl2 What is the rate law for the reaction? C2H6O2 + 3Br2 rightarrow …
Which aqueous solution will have the lowest freezing point? 0.040 m glucose 0.02
Which aqueous solution will have the lowest freezing point? 0.040 m glucose 0.025 m KBr 0.020 m Nacl 0.020 m BaCl2 What is the rate law for the reaction? C2H6O2 + 3Br2 rightarrow …
Which are isomers? cyclopentene and pentene Cyclopentene & Methylcyclohexene Cyc
Which are isomers? cyclopentene and pentene Cyclopentene & Methylcyclohexene Cyclopentene and Pentyne Cyclopentane & Pentane Cyclopentane & Pentyne Bromination of cycl…
Which are not hydrophilic? A) Cl-ions B) CH3-groups C) -O-H groups D) NH4 + ions
Which are not hydrophilic? A) Cl-ions B) CH3-groups C) -O-H groups D) NH4+ ions CH3CH2OH, ethanol, and water are miscible in all proportions because __________. A) they can freely…
Which are the strongest intermolecular forces or intramolecular forces? Which ar
Which are the strongest intermolecular forces or intramolecular forces? Which are the strongest intermolecular forces? Where are they found (see question #18)? Why does water not …
Which are the two Bronsted-Lowry acids in the following equation? NH 3 + HOH ->
Which are the two Bronsted-Lowry acids in the following equation? NH3 + HOH -> NH4+1 + OH-1 a. NH3 and HOH b. NH3 and NH4+1 c. NH3 and OH-1 d. NH4+1 and HOH I think it is A or …
Which are true and which are false? -The copper(I) ion is colorless -Copper(I) c
Which are true and which are false? -The copper(I) ion is colorless -Copper(I) chloride is soluble in water. -Both oxidation process, Cu metal to Cu+, and Cu metal to Cu2+, requir…
Which are true and which are false? -The copper(I) ion is colorless -Copper(I) c
Which are true and which are false? -The copper(I) ion is colorless -Copper(I) chloride is soluble in water. -Both oxidation process, Cu metal to Cu+, and Cu metal to Cu2+, requir…
Which are true and which are false? 1. A Scanner class can be used to read in us
Which are true and which are false? 1. A Scanner class can be used to read in user input. 2. Example syntax for creating a Scanner to read user input is: Scanner input = n…
Which arrow (A, B, C, D, E, or F) represents the energy of the transition state?
Which arrow (A, B, C, D, E, or F) represents the energy of the transition state? Is the reaction exothermic or endothermic? For the reaction 2MoC1_5 + 5Na_2S rightarrow 2MoS_2 + 1…
Which arrow is the diagram represents the activation energy for revere reaction?
Which arrow is the diagram represents the activation energy for revere reaction? A. A B. B C. C D. D The equilibrium constant, K_p, for the reaction CO(g) + H_2O(g) CO_2(x) + H_2(…
Which arrow on the phase diagram best corresponds to a substance being heated be
Which arrow on the phase diagram best corresponds to a substance being heated between C and D on the heating curve? Rank the three substances in order from lowest boiling point to…
Which assumption is not part of the kinetic-molecular theory of gases? a) A gas
Which assumption is not part of the kinetic-molecular theory of gases? a) A gas consists of particles that move randomly and rapidly. b) The size of gas particles is small compare…
Which atom in each pair has the more exothermic electron affinity? (Hint: Consid
Which atom in each pair has the more exothermic electron affinity? (Hint: Consider the stability of the electron configurations of the atom and its anion.) i) K or Ca ii) Cl or Ar…
Which atom in each set has the most exothermic electron affinity? i) N, O, Ne ii
Which atom in each set has the most exothermic electron affinity? i) N, O, Ne ii) Al, Si, Cl a. i) Ne ii) Cl b. i) N ii) Cl c. i) O ii) Cl d. i) Ne ii) Si e. i) O ii) Al Which ato…
Which atom in each set has the most exothermic electron affinity? i) N, O, Ne ii
Which atom in each set has the most exothermic electron affinity? i) N, O, Ne ii) Al, Si, Cl a. i) Ne ii) Cl b. i) N ii) Cl c. i) O ii) Cl d. i) Ne ii) Si e. i) O ii) Al Which ato…
Which band would show strong sharp absorption in the IR between 1800 and 1700 cm
Which band would show strong sharp absorption in the IR between 1800 and 1700 cm^-1? A. O = H B. N = H C. C = O D. C = C E. C = O Which of the following compounds will not have a …
Which barium salt will precipitate first? A solution containing a mixture of 0.0
Which barium salt will precipitate first? A solution containing a mixture of 0.0436 M potassium chromate (K_2CrO_4) and 0.0592 M sodium oxalate (Na_2C_2O_4) was titrated with a so…
Which best describes this sequence? Based on your knowledge of EAS, which answer
Which best describes this sequence? Based on your knowledge of EAS, which answer best describes this reaction, which is used by my research students as the first step in the synth…
Which best represents a gaseous compound? A) option a B) option b C) option c D)
Which best represents a gaseous compound? A) option a B) option b C) option c D) option d E) option e Which best represents a solid element? A) option a B) option b C) option c D)…
Which bond in the compound to below would require the least energy to undergo ho
Which bond in the compound to below would require the least energy to undergo homolytic cleavage? a. Bond A b Bond B c. Bond C d. Bond D e. Bond E Which of the protons in ethyl 3-…
Which bond should have the longest length? N-N N=N N.*N All three are same lengt
Which bond should have the longest length? N-N N=N N.*N All three are same length How many electrons are in the outermost shell of theIn3+ ion in its ground state 2 3 6 8 In the b…
Which bond will have the longest bond distance? Which gaseous atom of the elemen
Which bond will have the longest bond distance? Which gaseous atom of the elements below has the highest ionization energy? What is the ground-state electron configuration of a br…
Which bond will have the longest bond distance? Which gaseous atom of the elemen
Which bond will have the longest bond distance? Which gaseous atom of the elements below has the highest ionization energy? What is the ground-state electron configuration of a br…
Which bonding theory assumes that the formation of a bond leads to lower energy?
Which bonding theory assumes that the formation of a bond leads to lower energy? Valence Bond Theory Both Valence Bond Theory and Molecular Orbital Theory Molecular Orbital Theory…
Which box in the above scheme contains all of the ions, and only those ions, in
Which box in the above scheme contains all of the ions, and only those ions, in each of the following groups? Group I= Group II= Group III= Group IV= Group V= Consult your lab man…
Which box in the above scheme contains all of the ions, and only those ions, in
Which box in the above scheme contains all of the ions, and only those ions, in each of the following groups? Group I= Group II= Group III= Group IV= Group V= Consult your lab man…
Which buffer should I use for my ion exchange chromatography experiment? The two
Which buffer should I use for my ion exchange chromatography experiment? The two proteins used in the experiment are cytochrome C (isoelectric point between 10.0-10.5) and ferriti…
Which buffer system generally produces the fastest rate of formation of semicarb
Which buffer system generally produces the fastest rate of formation of semicarbazones of aldehydes and ketones? A. CH3CO2H/CH3CO2- B. H2PO4-/HPO42- C. H2CO3/HCO3- This may help, …
Which calculation is correct to determine the Conc. of Salicylic acid (M)? 1. (1
Which calculation is correct to determine the Conc. of Salicylic acid (M)? 1. (1.62M) (V1) = (100 mL)(M) or 2. A= E L C 2. The salicylic acid - iron (IIl) complex absorbs maximall…
Which can act as both an oxidizing agent and a reducing agent? (A) H_2O_2 (B) Na
Which can act as both an oxidizing agent and a reducing agent? (A) H_2O_2 (B) NaH (C) Na_2O (D) O_3 Which is the strongest reducing agent? (A) Ce (B) Li (C) Li^+ (D) Ce^3- 64. whi…
Which carbocation would be most stable? CH_3 CH CH_2 CH=CH_2 CH_2 CH_2 CH=CH CH_
Which carbocation would be most stable? CH_3 CH CH_2 CH=CH_2 CH_2 CH_2 CH=CH CH_3 A correct IUPAC name of the compound below is: 1-Bromo-1-methyl-2,5-cyclohexadiene 3-Bromo-3-meth…
Which change decreases DeltaG_rxn? N_2(g) + 1/2O_2(g) rightarrow N_2O(g) add a c
Which change decreases DeltaG_rxn? N_2(g) + 1/2O_2(g) rightarrow N_2O(g) add a catalyst to the system decrease the partial pressure of N_2 decrease the partial pressure of N_2O de…
Which change requires an oxidizing agent to produce theindicated product? A. S 2
Which change requires an oxidizing agent to produce theindicated product? A. S2O32- --->S4O62- B. Zn2+ ----> Zn C. ClO- -----> Cl- D. SO3 -----> SO42- Please EXPLAIN y…
Which chemical reaction is not properly balanced? 10 HNO_3 + F_2 rightarrow 10 N
Which chemical reaction is not properly balanced? 10 HNO_3 + F_2 rightarrow 10 NO_2 + 2HFO_3 + 5 H_2O 4 NH_3 + Cl_2 rightarrow N_2H_4 + 2NH_4 Cl 2 N_2 + 6 H_2O rightarrow 4NH_3 + …
Which choice correctly lists the intermolecular forces present in CH 4 ? Answer
Which choice correctly lists the intermolecular forces present in CH4? Answer A. London forces and hydrogen bonding B. London forces, …
Which choice is a pair of isomers? 1. H_2NCH_2CH_3 and CH_3CH_2NH_2 2. CH_3CH_2C
Which choice is a pair of isomers? 1. H_2NCH_2CH_3 and CH_3CH_2NH_2 2. CH_3CH_2CH_2OH and CH_3CH_2OCH_2CH_3 3. ethanol and propene 4. 1-butene and 2-methylpropane 5. CH_3CH_2CH_2C…
Which choice is a pair of isomers? 1. H_2NCH_2CH_3 and CH_3CH_2NH_2 2. CH_3CH_2C
Which choice is a pair of isomers? 1. H_2NCH_2CH_3 and CH_3CH_2NH_2 2. CH_3CH_2CH_2OH and CH_3CH_2OCH_2CH_3 3. ethanol and propene 4. 1-butene and 2-methylpropane 5. CH_3CH_2CH_2C…
Which choice provides the IUPAC name of this structure? (A) 4-ethylheptanal ethe
Which choice provides the IUPAC name of this structure? (A) 4-ethylheptanal ether (B) 5-ethoxy-5-propylpentanal (C) 5-etboxyoctanal (D) 7-methyl-5-ethoxyoctanal 2. What structure …
Which cobalt complex is favored when adding deionized water to cobalt II chlorid
Which cobalt complex is favored when adding deionized water to cobalt II chloride and ethanol? The solution is a purple color and when adding the heat it turned blue. When taken o…
Which cobalt complex is favored when adding deionized water to cobalt II chlorid
Which cobalt complex is favored when adding deionized water to cobalt II chloride and ethanol? The solution is a purple color and when adding the heat it turned blue. When taken o…
Which combination of substances would be best for preparing an aqueous buffer so
Which combination of substances would be best for preparing an aqueous buffer solution with a pH of 4.00, given the K_a values: CH_3COOH 1.8 times 10^-5 HF 6.6 times 10^-4 C_6H_5C…
Which combination ot elements forms crystalline solids that will dissolve in wat
Which combination ot elements forms crystalline solids that will dissolve in water, producing a solution of ions that conduct an electric current? metal and metal and nonmetal and…
Which combination will produce a precipitate? NaOH (aq) and HCl (aq) NaCl (aq) a
Which combination will produce a precipitate? NaOH (aq) and HCl (aq) NaCl (aq) and HC_2H_3O_2 (aq) NaOH (aq) and Fe(NO_3)_2 (aq) NH_4NO_3 (aq) and CaCl_2 (aq) None of the above Th…
Which combination would be appropriate for a spectrometer to measure absorbance
Which combination would be appropriate for a spectrometer to measure absorbance in the 200-360 nm range? Which technique should be used for measuring trace amounts (ppb) of benzen…
Which combination(s) of alkyl bromide and carbonyl compound can be used to prepa
Which combination(s) of alkyl bromide and carbonyl compound can be used to prepare the following product by addition of the Grignard reagent derived from the alkyl bromide to the …
Which combinations could result in a double-displacement reaction (not asking if
Which combinations could result in a double-displacement reaction (not asking if the reaction will occur) Yes or No? a. Mg(OH)2 + Ca __________________ b. Fe(SO4)3 + NaNO3 _______…
Which combinations of elements would likely yield a compound of empirical formul
Which combinations of elements would likely yield a compound of empirical formula X 2Y 3? Which combinations of elements would likely yield a compound of empirical formula ? B2O3 …
Which command is used to find all customers who have a loan, an account,or both?
Which command is used to find all customers who have a loan, an account,or both? account ACCOUNT_NUMBER BRANCH_NAME BALANCE --------------- ---------------------------------------…
Which compound 1s not oxidized readily by K_2 Cr_2 O_7 1 n H_2 SO_4? Complete co
Which compound 1s not oxidized readily by K_2 Cr_2 O_7 1 n H_2 SO_4? Complete combustion of gasoline gives carbon dioxide and water. In this process, gasoline fs Which is the prod…
Subject
Chemistry concepts and calculations
Use Browse or pick another subject.