Chemistry concepts and calculations

Which of the following best describes what will happen when a solution of AgNO 3

Which of the following best describes what will happen when a solution of AgNO3 is slowly added to a saturated solution of silver acetate, CH3COO-Ag+, without changing the volume …

Which of the following best explains how a pH indicator works? A) a pH indicator

Which of the following best explains how a pH indicator works? A) a pH indicator is one color at on pH and a different color at a higher pH and it is usually just a difference of …

Which of the following best explains the differences in the absorption wave, the

Which of the following best explains the differences in the absorption wave, the molecules labeled "HPSensor 1", HPSensor 2", and "HPSensor 3"? rth observed between ethanol, water…

Which of the following best explains the relative boiling points for Cl2 and HCl

Which of the following best explains the relative boiling points for Cl2 and HCl? -Cl2 has the higher boiling point because liquid -Cl2 has stronger London-dispersion forces than …

Which of the following best explains the relative boiling points for Cl_2and HCl

Which of the following best explains the relative boiling points for Cl_2and HCl? Cl_2 has the higher boiling point because liquid Cl_2 has stronger London-dispersion forces than …

Which of the following best explains what is happening when an atom emits light?

Which of the following best explains what is happening when an atom emits light? Heat energy is convening a neutron into a proton and an electron, which is ejected into the orbit …

Which of the following best explains why a semisoluble hydroxide salt like Zn(OH

Which of the following best explains why a semisoluble hydroxide salt like Zn(OH)2 is more soluble in acidic or basic aqueous solutions than in pure water? O Because the Zn2+ ion …

Which of the following best explains why the polar regions are colder than the e

Which of the following best explains why the polar regions are colder than the equatorial regions of the Earth? Select one: The equator has a thick layer of greenhouse gas that he…

Which of the following best explains why the synthetic route shown below would b

Which of the following best explains why the synthetic route shown below would be unsuccessful? HC C: CH_3 CH_3 Br rightarrow CH_3 CH_2 C CC(CH_3)_3 NaNH_2 (CH_3)_3 CBr The alkyni…

Which of the following best explains why vapor pressure is affected by adding so

Which of the following best explains why vapor pressure is affected by adding solute to a solvent? Adding solute to the solvent increases the volume of solution therefore reducing…

Which of the following best represents the length of the life cycle of a typical

Which of the following best represents the length of the life cycle of a typical midlatitude cyclone? 1 hour 1 day 1 week 1 month This is the predicted value of the normal vertica…

Which of the following binding constants represents the lowest affinity? K_a = 1

Which of the following binding constants represents the lowest affinity? K_a = 1.0 Times 10^7 M^-1 K_a = 1.0 Times 10^-10 M^-1 K_d = 1.5 Times 10^-9 M^-1 K_a = 2.0 Times 10^8 M^-1…

Which of the following bond types is generally the weakest? Covalent logic Metal

Which of the following bond types is generally the weakest? Covalent logic Metallic Hydrogen Van der Waals bonding is responsible for binding hydrogen and oxygen atoms together in…

Which of the following bonds could be described as no polar? a. H-P b. Li - O c.

Which of the following bonds could be described as no polar? a. H-P b. Li - O c. H -Li d. C - O e. B - CI A covalent bond results when a. electrons are transferred from one atom t…

Which of the following bonds could be described as nonpolar? a. H-P b. Li-O c. H

Which of the following bonds could be described as nonpolar? a. H-P b. Li-O c. H-Li d. C-O e. B-Cl A covalent bond results when _____ a. electrons are transferred from one atom to…

Which of the following bonds is definitely bonic? Which of these statements abou

Which of the following bonds is definitely bonic? Which of these statements about greenhouse gases and the greehouse effect is not correct? Greenhouse gases prevent infrared radia…

Which of the following bonds is most polar? B-H O-H P-H Al-H C-H Which of the fo

Which of the following bonds is most polar? B-H O-H P-H Al-H C-H Which of the following statements regarding allotropes is NOT correct? Allotropes of an element have different str…

Which of the following bonds is most polar? B-H o-h p-H al-h c-h Which of the fo

Which of the following bonds is most polar? B-H o-h p-H al-h c-h Which of the following statement' tiding allotropes is NOT correct? allotropes of an element have different struct…

Which of the following bonds is not possible? a) C=C b) O=H c) C=O d) N=N e) N=O

Which of the following bonds is not possible? a) C=C b) O=H c) C=O d) N=N e) N=O What is the hybridization of I in IF_3? a) Sp b) sp^2 c) sp^3 d) sp^3d e) sp^3d^2 Why is graphite …

Which of the following bonds is the most polar? A) H__F B) H__Cl C) H__Br D) H__

Which of the following bonds is the most polar? A) H__F B) H__Cl C) H__Br D) H__I 24. How many electrons are associated with a double bond? A) 1 B) 2 C) 4 D) 6 25. How many bonds …

Which of the following bonds is the most polar? A) H__F B) H__Cl C) H__Br D) H__

Which of the following bonds is the most polar? A) H__F B) H__Cl C) H__Br D) H__I 24. How many electrons are associated with a double bond? A) 1 B) 2 C) 4 D) 6 25. How many bonds …

Which of the following bonds will be the shortest? Based on electronegativities,

Which of the following bonds will be the shortest? Based on electronegativities, which one of the following would have ionic bonds? Which of the following gases in the atmosphere …

Which of the following bonds will have the lowest (a)C-C (b)C-P (c)C-Se (d)C-I (

Which of the following bonds will have the lowest (a)C-C (b)C-P (c)C-Se (d)C-I (e)Si-I Which of the indicated bonds absorbs at a higher wavelength in an IR spectrum and why? CH3CH…

Which of the following bonds will have the lowest IR stretching frequency? (a) C

Which of the following bonds will have the lowest IR stretching frequency? (a) C–C (b) C–P (c) C–Se (d) C–I (e) Si–I The stretching motion of which of the indicated bonds absorbs …

Which of the following bromides will react faster with CH_3OH in an SnI reaction

Which of the following bromides will react faster with CH_3OH in an SnI reaction? A) Br_CH_3 CH_2CHCH_3 B) CH_3CH_2CH_2Br C) CH_2 = CHCH_2CH_2Br D) (CH_3)_2CBrCH_2CH_3 E) CH_3Br T…

Which of the following buffers would resist the most change if 0.10 M of HNO3 wa

Which of the following buffers would resist the most change if 0.10 M of HNO3 was added? If 0.10 M NaOH added? A. 0.10 M H3PO4/ 0.010 M KH2PO4 B. 0.10 M H3PO4/ 0.10 M KH2PO4 C. 0.…

Which of the following calculations would require the use of the quadratic formu

Which of the following calculations would require the use of the quadratic formula? A. Calculating the pH of 0.010 M HCI B. Calculating the pH of 0.010 M HF (K.-7.1 x 104) C. Calc…

Which of the following can act as buffer solutions? 0.1 M HC_2H_3O_2/0.1 1 M NaC

Which of the following can act as buffer solutions? 0.1 M HC_2H_3O_2/0.1 1 M NaC_2H_3O_2 0.1 M NH_3/0.1 M NH_4 CI 0.1 M HNO_3/0.1 M NaNO-3 0.1 M H_2SO_3/0.1 M NaHSO_3 0.1 M KHSO_4…

Which of the following can be NBS Br_2/FeBr_5 Which of the following functional

Which of the following can be NBS Br_2/FeBr_5 Which of the following functional groups are -direction? Br, CH_3CH NH_2 Cl, NH_3, COOH I, SO H OH OCH COCH NO CH CH Which of the fol…

Which of the following can be NBS Br_2/FeBr_5 Which of the following functional

Which of the following can be NBS Br_2/FeBr_5 Which of the following functional groups are -direction? Br, CH_3CH NH_2 Cl, NH_3, COOH I, SO H OH OCH COCH NO CH CH Which of the fol…

Which of the following can cause abnormally high levels of ketone bodies to be p

Which of the following can cause abnormally high levels of ketone bodies to be present in the blood? a. diabetes b. low carb diet c. starvation d. all of the responses are correct…

Which of the following can occur in bacteria but not eukaryotes? RNA can be tran

Which of the following can occur in bacteria but not eukaryotes? RNA can be translated in both 5' rightarrow 3' and 3' rightarrow 5' directions. Eukaryotic mRNA is read without pu…

Which of the following carbocations is (are) likely to undergo rearrangement thr

Which of the following carbocations is (are) likely to undergo rearrangement through a methyl shift? I II III I and II II and III What is the IUPAC name of the expected major prod…

Which of the following carbocations is likely to rearrange? A) I B) II C) II D)

Which of the following carbocations is likely to rearrange? A) I B) II C) II D) IV E) II and IV What reagents are needed to accomplish the following transformation? A) H_2OH^+ B) …

Which of the following carbocations is likely to rearrange? A) I B) II C) III D)

Which of the following carbocations is likely to rearrange? A) I B) II C) III D)IV E) II and IV What reagents are needed to accomplish the following transformation? A) H_2 O/H^+ B…

Which of the following carbocations is likely to rearrange? A) I B) II C) III D)

Which of the following carbocations is likely to rearrange? A) I B) II C) III D) IV E) II and IV What reagents are needed to accomplish the following transformation? A) H_2O/H^+ B…

Which of the following carbocations is the most stable? Which of the following i

Which of the following carbocations is the most stable? Which of the following is the 1, 4-addition product in the reaction shown below? (3) What is the product of the following D…

Which of the following carbohydrate will afford the same product from wohl degra

Which of the following carbohydrate will afford the same product from wohl degradation Take Test: Unit 4- CHM2 x mycourses.qccedu/webapps/assessment/take/launch jsp?course assessm…

Which of the following cations would have the most unpaired electrons ? Which of

Which of the following cations would have the most unpaired electrons ? Which of the following elements will form both a soluble nitrate and an insoluble bromide that are photosen…

Which of the following cations would have the most unpaired electrons ? Which of

Which of the following cations would have the most unpaired electrons ? Which of the following elements will form both a soluble nitrate and an insoluble bromide that are photosen…

Which of the following cations would have the most unpaired electrons ? Which of

Which of the following cations would have the most unpaired electrons ? Which of the following elements will form both a soluble nitrate and an insoluble bromide that are photosen…

Which of the following changes in the physical parameters of a chromatography co

Which of the following changes in the physical parameters of a chromatography column would improve efficiency of separating closely-eluting compounds? Circle all that apply. a) ma…

Which of the following changes represent a physical change, rather than evidence

Which of the following changes represent a physical change, rather than evidence of a chemical reaction? a. When a piece of zinc metal is placed in a solution of HCl, bubbles begi…

Which of the following changes represents a physical change, rather than evidenc

Which of the following changes represents a physical change, rather than evidence of a chemical reaction? Why? (A) When water and a yello solution of antifreeze are mixed, the res…

Which of the following changes would improve a chromatographic separation? (eith

                    Which of the following changes would improve a chromatographic separation? (either GC or LC-type). Circle all that apply. For full credit, write a short phrase…

Which of the following changes would tend to decrease the measured cell potentia

Which of the following changes would tend to decrease the measured cell potential of a voltaic cell with cell reaction cu (aq) + 2 Ag^+(s) rightarrow Cu^2+(aq) + 2 Ag(s) X. decrea…

Which of the following characteristics does not apply to PF 3 ? Question 5 optio

Which of the following characteristics does not apply to PF3? Question 5 options: has three bonds contains polar bonds polar molecule one lone pair of electrons on phosphorus trig…

Which of the following characteristics is not a property of bases? Select one: a

Which of the following characteristics is not a property of bases? Select one: a. They produce protons (hydronium ions) in water. b. They have a pH higher than 7. c. They react wi…

Which of the following characteristics pertain to covalent compounds? a. These c

Which of the following characteristics pertain to covalent compounds? a. These compounds are generally soluble in polar solvents b. These compounds are poor conductors of electric…

Which of the following characterizes an alpha ray? Choose all that apply. is att

Which of the following characterizes an alpha ray? Choose all that apply. is attracted to the negatively charged plate in an electric field is more penetrating than a gamma ray is…