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.
The reaction represented above occurs in a single step that involves the collision between a particle of NO and a particle of NO3 . A scientist NO and NO3 that have sufficient energy to overcome the activation energy.
(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
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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.
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.
C2H6 molecules have a larger, more polarizable electron cloud than CH4 molecules do. The gases CO2 (g) and NH3 (g) can be liquefied at 20°C by compressing them to sufficiently high pressures. A student claims that NH3 (g) can be liquefied at a lower pressure than CO2 (g) can be liquefied.
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.
Carbon atoms in diamond have four covalent bonds, whereas graphite is made of layers that are held together by relatively weak dispersion forces. A gaseous air‑fuel mixture in a sealed car engine cylinder has an initial volume of 600.mL at 1.0atm.
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.
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.