IONIC CRYSTALS ARE ALWAYS... (Discuss the microscopic arrangement of the particles in these crystals. Note similarities you observe that might be used as criteria to identify them as "ionic crystals" in the future.) MOLECULAR CRYSTALS ARE ALWAYS... (Discuss the microscopic arrangement of the particles in these crystals. Note similarities you observe that might be used as criteria to identify them as "molecular crystals" in the future.) silver fluoride (ABE) rubidium chloride (RbC) nickel oxide (NO) dry ice (CO₂) urea (CH,UN,0) water as ice (H₂O)

IONIC CRYSTALS ARE ALWAYS... (Discuss the microscopic arrangement of the particles in these crystals. Note similarities you observe that might be used as criteria to identify them as "ionic crystals" in the future.) MOLECULAR CRYSTALS ARE ALWAYS... (Discuss the microscopic arrangement of the particles in these crystals. Note similarities you observe that might be used as criteria to identify them as "molecular crystals" in the future.) silver fluoride (ABE) rubidium chloride (RbC) nickel oxide (NO) dry ice (CO₂) urea (CH,UN,0) water as ice (H₂O)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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In our previous discussions, we discussed how phase changes (gas to liquid to solid, for example) can occur by manipulating the parameter of temperature. We defined temperature as the average kinetic energy of the particles, so when we raise or lower the temperature, we are adding or removing energy to the system, respectively. Gas Cool or compress Heat or reduce pressure Liquid Cool Heat Crystalline solid Based on your observations over the past two weeks, please explain why lowering the temperature can condense the helium gas into a liquid, a process by which the He atoms stick together?
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Considering table salt (inorganic) and table sugar (organic), how do they differ in terms of melting point? Briefly justify your answer.
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Temperature at which the vapor pressure of a liquid is equal to the atmospheric pressure above the liquid. a. absolute zero b. boiling point c. Boyle's Law d. Charles' Law e. cohesive force f. condensation g. disruptive force h. kinetic energy i. law of conservation of matter j. melting point k. potential energy l. sublimation
Image: Graph, Energy on X axis, Temp on Y axis. There is a line sloping up and to the right labelled "A" beginning near bottom of Y-axis. At end of this line, there is a horizontal line labelled "B". At the end of this line there is another line sloping up and to the right labelled "C". End of Image. NH3 (MW = 17.034 g/mol) Melting point = minus 77.73 degrees C Boiling point = minus 33.34 degrees C Heat capacity of liquid = 4.700 J/g/K Heat capacity of gas = 2.060 J/g/K Heat of vaporization = 23.40 kJ/mol Find A, B and C (as far as 0 degrees C) and the total energy required (in that order) in Joules (express as 'J'). Assume 100.0 g of substance. A, B and C should have four significant figures. When entering your values import your answer followed by a space then J Example: 3450. J Notice that in this particular example a decimal point was included after 3450 to indicate that the zero is significant. If the answer does not need a decimal do not include one. 1.____ 2.____ 3.____ 4.____
17 Which best describes a liquid? A. Molecules and atoms are in a fixed position. Their movement is limited to vibration only. B. Molecules and atoms move by sliding over and around other molecules and atoms, but are not moving independently of other molecule or atoms. C. Molecules and atoms move independently in 3-dimensions without contacting other molecules or atoms. D. Molecules and atoms are not moving at all. They are totally motionless. You create a mixture of three liquids. The three liquids blend together. The liquids 18 occupy the same volume and do not separate. What are they? A. Immiscible liquids C. Irreversible liquids D. Reversible liquids B. Miscible liquids 19 What best describes how a solution is made? A. Solute is dissolved into a solvent. B. Solvent is dissolved into a solute. C. Solid is always dissolved into a liquid. D. Liquid is always dissolved into a gas. You isolate a gas in the left side of a two- chamber vessel. The right side is empty. You open the valve…
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3. A very hard clear crystalline solid can be used to cut steel. It does not conduct electricity as a solid and does not dissolve in water. It has a very high melting point. What is it? Metallic lonic Molecular solid Network solid
The approximate molar mass of a volatile liquid can be determined by:1. Heating a sample of the liquid in a flask with a tiny hole at the top, which converts the liquid into gas that may escape through the hole2. Removing the flask from heat at the instant when the last bit of liquid becomes gas, at which time the flask will be filled with only gaseous sample at ambient pressure3. Sealing the flask and permitting the gaseous sample to condense to liquid, and then weighing the flask to determine the sample’s mass as shown.