during the course of the above expèriment what happens to the no ions

What happens to the NO3-ions during the course of the experiment?

During the course of the experiment, which of the following happens to the NO3- ions? They remain dissolved in the filtrate solution. M+ is an unknown metal cation with a 1+ charge. A student dissolves the chloride of the unknown metal, MCl, in water to make it 100.0 mL of solution.

What happens to the pH as H+ ions are consumed?

(C) As H+ ions are consumed, the solution becomes less acidic and the pH increases. (D) As H+ ions are consumed, the solution becomes less acidic and the pH decreases. 35. The BF3 molecule is nonpolar, whereas the NF3 statements accounts for the difference in polarity of the two molecules? molecule is polar. Which of the following

What did the chemistry teacher conclude from the demonstration?

A chemistry teacher carried out several demonstrations, and students recorded their observations. For one of the demonstrations, a student concluded that a physical change took place, but not a chemical change. Which of the following observations could the student have made of the results of the demonstration?

What is the charge of the unknown metal in the KCL M+ Ion?

KCl M+ is an unknown metal cation with a 1+ charge. A student dissolves the chloride of the unknown metal, MCl, in water to make it 100.0 mL of solution. The student then mixes the solution with excess AgNO3 solution, causing the AgCl to precipitate. The student collects the precipitate by filtration, dries it, and records the data shown below.

What is the difference between the lower and higher energy levels of a dye molecule?

Why does NaCl have a lower melting point than MgS?

What is the difference between liquid F2 and liquid HF?

Is carbon longer in nonane than in trifluoropentane?

Is CO2 polar or nonpolar?

Does NaBr conduct electricity?

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When a Buret is rinsed before a titration which of the techniques below is the best procedure?

When a buret is rinsed before a titration, which of the techniques below is the best procedure? Rinse the buret two times: each time with some of the titrant solution.

Which of the following is evidence that ionic bonds formed during the precipitation?

Which of the following is evidence that ionic bonds formed during the precipitation? The precipitate has a high melting point. A student combines a solution of NaCl(aq) with a solution of AgNO3(aq), and a precipitate forms. Which of the following is the balanced net ionic equation for the formation of the precipitate?

Which of the following best helps to explain why the value of delta H for the dissolving of CaF2 in water is positive?

Which of the following best helps to explain why the value of ΔH° for the dissolving of CaF2 in water is positive? Ca2+ ions have very strong ion-ion interactions with F- ions in the crystal lattice.

Which of the following best explains why infrared spectroscopy is an appropriate method to confirm that the product contains a carbonyl?

Which of the following best explains why infrared spectroscopy is an appropriate method to confirm that the product contains a carbonyl? The absorption of infrared radiation leads to an increase in molecular vibrational level associated with the stretching of the carbonyl.

What experimental result would be evidence that a chemical reaction took place when the solutions were combined?

What experimental result would be evidence that a chemical reaction took place when the solutions were combined? Bubbles formed when the two solutions were combined.

Which reaction will result in the formation of a precipitate?

Precipitation reactionsPrecipitation reactions are usually double displacement reactions involving the production of a solid form residue called the precipitate. These reactions also occur when two or more solutions with different salts are combined, resulting in the formation of insoluble salts that precipitate out of the solution.

Which of the following happens to H atoms in the forward reaction?

Which of thee following happens to H atoms in the forward reaction? The reaction has a high activation energy.

Which compound chloroacetic acid or iodoacetic acid most likely has the lower boiling point and why?

Which compound, chloroacetic acid or iodoacetic acid, most likely has the lower boiling point and why? Chloroacetic acid, because London dispersion forces among its molecules are weaker.

Which of the following best explains why the enthalpy of vaporization of methane is less than that of water?

Which of the following best explains why the enthalpy of vaporization (energy to boil) methane is less than that of water? Methane does not exhibit hydrogen bonding, but water does.

What causes IR peaks to shift?

Analyses of IR spectra showed that the apparent positional shifts of peak maxima in these systems are actually due to relative contribution changes of two overlapped bands, instead of the gradual frequency shift of a single band induced by the change in the strength of molecular interactions.

How could IR spectroscopy be used to distinguish between the following pair of compounds?

IR spectroscopy distinguishes compounds based on the vibrations of their bonds. CH₃CH₂OCH₃ has C-C, C-H, and C-O bonds. CH₃CH₂CH₂OH has C-C, C-H, C-O and O-H bonds. So we look for the vibrational frequencies of an OH group.

What happens when a molecule absorbs infrared radiation?

When infrared radiation matching these frequencies falls on the molecule, the molecule absorbs energy and becomes excited. Eventually the molecule returns to its original (ground) state, and the energy which was absorbed is released as heat.

Unit 3 AP Exam Review FRQ.docx - Course Hero

2021 AP Exam Review Unit 3 FRQ For parts of the free-response question that require calculations, clearly show the method used and the steps involved in arriving at your answers. You must show your work to receive credit for your answer. Examples and equations may be included in your answers where appropriate. 1.

AP Chemistry | Unit 3 Progress Check: MCQ Flashcards | Quizlet

(Li+, Mg2+, Na+, and Ca2+ cations shown above) The diagram above represents four cations, all shown to the same scale. Which cation would be predicted by Coulomb's law to have the strongest ion-dipole attraction to water, and why?

Unit 3 Progress Check: MCQ Flashcards | Quizlet

A student uses a spectrophotometer to analyze a solution of blue food dye. The student first rinses a cuvette with distilled water. Then the student adds the blue dye solution to the cuvette, forgetting to rinse the cuvette with the blue dye solution first.

IMF AP Graded MC | Chemistry Quiz - Quizizz

Play this game to review Chemistry. Which particle diagram shown above best represents the strongest intermolecular force between two ethanol, C 2 H 6 O, molecules?

Bonding and Intermolecular Forces Review Extended - Quizizz

Play this game to review Science. Which of the following can be inferred from the diagram above that shows the dependence of potential energy on the internuclear distance between two atoms?

What is the difference between the lower and higher energy levels of a dye molecule?

Certain electrons in the dye molecule move to a higher energy level, with the difference in energy between the lower and higher energy levels being the same as the energy of the absorbed photons. The infrared spectrum above represents the absorption of certain wavelengths of radiation by molecules of CO2.

Why does NaCl have a lower melting point than MgS?

Diagram 1 represents NaCl; it has a lower melting point than MgS because the coulombic attractions between its singly charged Na+Na+ ions and the Cl− ions are weaker than those between the ions in MgS. The diagram above is a molecular model of a gaseous diatomic element that is just above its boiling point.

What is the difference between liquid F2 and liquid HF?

Liquid F2 has weak dispersion force attractions between its molecules, whereas liquid HF has both weak dispersion force attractions and hydrogen bonding interactions between its molecules. The structure of one form of boron nitride is represented above. This form of boron nitride is one of the hardest substances known.

Is carbon longer in nonane than in trifluoropentane?

The carbon chains are longer in nonane than they are in 2,3,4-trifluoropentane. The diagram above is a molecular model of a gaseous diatomic element that is just above its boiling point. Intermolecular forces between the gas molecules will cause them to condense into the liquid phase if the temperature is lowered.

Is CO2 polar or nonpolar?

CO2 is a nonpolar molecule that has London dispersion intermolecular forces that are weaker than the dipole-dipole and London dispersion forces between the polar NH3 molecules. The graph above shows how a particular real gas deviates from ideal behavior at very high pressures.

Does NaBr conduct electricity?

Crystalline NaBr contains no freely moving electrons to conduct electricity, but molten NaBr is composed of freely moving Na+ and Br− ions, which allows it to be a good conductor of electricity. The structures of two allotropes of carbon are represented above.

What is the difference between the lower and higher energy levels of a dye molecule?

Certain electrons in the dye molecule move to a higher energy level, with the difference in energy between the lower and higher energy levels being the same as the energy of the absorbed photons. The infrared spectrum above represents the absorption of certain wavelengths of radiation by molecules of CO2.

Why does NaCl have a lower melting point than MgS?

Diagram 1 represents NaCl; it has a lower melting point than MgS because the coulombic attractions between its singly charged Na+Na+ ions and the Cl− ions are weaker than those between the ions in MgS. The diagram above is a molecular model of a gaseous diatomic element that is just above its boiling point.

What is the difference between liquid F2 and liquid HF?

Liquid F2 has weak dispersion force attractions between its molecules, whereas liquid HF has both weak dispersion force attractions and hydrogen bonding interactions between its molecules. The structure of one form of boron nitride is represented above. This form of boron nitride is one of the hardest substances known.

Is carbon longer in nonane than in trifluoropentane?

The carbon chains are longer in nonane than they are in 2,3,4-trifluoropentane. The diagram above is a molecular model of a gaseous diatomic element that is just above its boiling point. Intermolecular forces between the gas molecules will cause them to condense into the liquid phase if the temperature is lowered.

Is CO2 polar or nonpolar?

CO2 is a nonpolar molecule that has London dispersion intermolecular forces that are weaker than the dipole-dipole and London dispersion forces between the polar NH3 molecules. The graph above shows how a particular real gas deviates from ideal behavior at very high pressures.

Does NaBr conduct electricity?

Crystalline NaBr contains no freely moving electrons to conduct electricity, but molten NaBr is composed of freely moving Na+ and Br− ions, which allows it to be a good conductor of electricity. The structures of two allotropes of carbon are represented above.