Which of the following would you expect to evaporate most quickly (and why?): water (18 g/mol) or octane C3H18 (114 g/mol) water, has the lowest molar mass water, because it exhibits hydrogen bonding octane, does not exhibit hydrogen bonding octane, has the highest molar mass

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A: Water has polar O-H bonds. The negative O atoms attract the positive H atoms in nearby molecules,…

Q: What are the requirements for molecules to form hydrogen bonds? (What atoms must be present and…

A: Hydrogen bonding is a type of intermolecular forces.

Q: 6 HCl(aq)  +  2 Al(s)  ?  2 AlCl3(aq)  +  3 H2(g)   Typically, the hydrogen gas is bubbled through…

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Q: Of the substances below, which will hydrogen bond with water? :0: H. II. I. H Both I. and II. Only…

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Q: There's more than one way for mother nature to get rid of a fresh blanket of snow,if the weather…

A: 1. The substances that vaporize easily are called Volatile substances.

Q: 4. Which of the following substances can form hydrogen bonds with water molecules? I. CH3COOH II.…

A:

Q: A 1.70 m3 container holds a sample of O2 gas. At 294 K the pressure of the container is 1.08 x 105…

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Q: Why does surface tension allow the fly fisherman’s hook to float on water?

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Q: 5. Beside each substance write the type of force (London, Hydrogen Bond, Dipole, lonic, Covalent…

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Q: 1. Dipole-Dipole forces exist between permanent dipoles.   True or False   2. The creation of…

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Q: Which of the following forces is the strongest? 1. London-Dispersion Forces 2. Covalent Bonds 3.…

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Q: Explain the following observation. When a needle is carefully placed on the surface of water, it fl…

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Q: This graph shows how the vapor pressure of three liquids varies with temperature: 900 800- 700->…

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Q: Which of the following best explains how a spider could float on a water surface? Adhesive forces…

A: Water spider can float on water surface due to following reason which is given below.

Q: Which molecules took longer to evaporate? Is it water, ethyl alcohol, vinegar or acetone?

A: Water took longer to evaporate than ethyl alcohol, vinegar or acetone.

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Q: Match the following molecules with the most significant intermolecular force present. hydrogen, H2…

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Q: Which of these molecules will not form hydrogen bonds with water? A. HF B. CH4 C. NH3 D. HCOOH

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Q: Identify the predominant intermolecular forces in each of the given substances. Electrostatic…

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Q: What is the partial pressure, in mm Hg, of N2 collected over water at 25°C and an atmospheric…

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Q: Part a) What is the theoretical yield of water (in mg) when 0.225 g of gaseous NH3 and 0.480 g of O2…

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A: 4. Given information,    Solids melt when heated

Q: Methane, CH4 is a molecule. In a molecule of methane, the primary intermolecular forces are polar…

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Q: The substance CS2 has a melting point of -110.8 °C and a boiling point of 46.3 °C. Its density at 20…

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Q: If you inject a 1.0 g sample of liquid water into a closed 1.00 liter container, some of the water…

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Q: 1. A paper clip can float on water. 2. When you place a straw into a glass of water, the water seems…

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Q: 4. Will water form a surface coat around a molecule such as octane, CH,(CH₂),CH, (Figure 7)?…

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Q: Which of the following liquids are likely to be miscible with water: 1-propanol (CH3CH2CH2OH),…

A: To identify which of the following liquid is miscible with water. 1-propanol CH3CH2CH2OH Carbon…

Q: of 0.680 atm and a temperature of 76.4 K is compressed at constant temperature to a pressure of 50.6…

A: Argon sample is given at 0.68atm and 76.4k and it compressed to 50.6atm at constant temperature…

Q: Which of the following forces is the weakest? 1. London-Dispersion Forces 2. Covalent Bonds 3.…

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Q: What forms of water will be present in a 1.0 L flask at 303 K containing a visible amount of liquid…

A: D. liquid and gas

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Q: Why helium and hydrogen gases not liquefied at room temperature by applying very high pressure?

A: The critical temperature of helium and hydrogen are as follows: Helium: -267.96°C Hydrogen:…

Q: Indicates the major types of intermolecular forces - (1) ionic bonds, (2) dipole-dipole attractions,…

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Q: Which of the following molecules can participate in any kind of hydrogen bonding with water? H-CEN:…

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Q: 5. Beside each substance write the type of force (London, Hydrogen Bond, Dipole, lonic, Covalent…

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Q: Which of the following molecules can participate in any kind of hydrogen bonding with water? All of…

A: Hydrogen bonding takes place only when hydrogen atom is present at most electronegative atom like…

Q: Compare and contrast convection, conduction, radiation and evaporation

A: Interpretation: We have to explain convection, conduction , radiation and evaporation.

Q: Temperature of hot water Volume of water pulled into the flask Temperature of the ice bath Volume of…

A: Given - Temperature of hot water=98.0oCvolume of water pulled into flask =122 mLtemperature of ice…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.