CHEM 6B Chapter Notes - Chapter 13: Effusion, Junkers J 1, Crystal

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ceriseshark794

21 Dec 2016

School

UCSD

Department

Chemistry and Biochemistry

Course

CHEM 6B

Professor

Sandrine Bernoilles

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Document Summary

Most of the volume of a gas is empty space. Three physical states of matter: solid, liquid, gas. Solid has a fixed volume and shape. Liquid has a fixed volume but assumes the shape of the container into which it is poured. Individual particles vibrate just a little around fixed lattice positions but are not free to move about. Solid crystalline solid: ordered array, lattice, of particles. Restrictions on the motion of the particles of a solid are reflected by the fixed. Liquid particles are in continuous contact with one another but free to move about. No orderly, fixed arrangement of particles as compared to a solid. When a solid melts to become a liquid, the lattice breaks down and the particles are. Small compressibilities: their volumes do not change appreciably with increasing. Particles take up only a small fraction ofthe total space occupied by a gas.

Related Questions

How do solids, liquids, and gases differ?

a. in solid matter, atoms or molecules pack dose to each other in fixed locations; in gases, atoms or molecules pack about as closely as they do in solid matter, but they are free to move; in liquid matter, atoms or molecules have a lot of space between them and are free to move

b. in solid matter, atoms or molecu es pack dose to each other but, they are free to move; in liquid matter, atoms or molecules pack about as closely as they do in solid matter, they are also free to move; in gaseous matter, atoms or molecules have a lot of space between them and are free to move relative to one another

c. a solid has a fixed volume and rigid shape; gases assume the shape of their container; liquids always assume the shape and volume of their container

d. a solid has a fixed volume and rigid shape; liquids assume the shape of their container; gases always assume the shape and volume of their container

salmongoat119

1. Which characteristic below describes ONLY a solid (not liquid or gas)?
a) definite shape b) particles in contact c) definite volume d) completely fills container
2. When iron rusts, it forms a reddish-brown solid. This is:
a) a physical change b) a chemical change c) no change at all
3. What is the name of FeSO4?
a) iron (I) sulfate b) iron (II) sulfate c) iron sulfite d) iron sulfide
4. A bottle label states that the bottle contains âdrinking water with minerals added for flavor. This would be an example of:
a) an element b) a compound c) a heterogeneous mixture d) a homogeneous mixture
5. Which answer has the correct number of significant figures for: length = 2.0 m + 0.2100 m?
a) 2.2 b) 2.21 c) 2.210 d) 2.2100
Place the answer with the correct number of significant figures on the lines provided below.
6. To drive one kilometer, how many centimeters should you drive?
_______________cm
7. A 10.0 gram block of gold has a density of 19.32 g/cm3. What is its volume?
______________cm3
8. What is the formula of sodium sulfide?
_________________________
9. What is the name of H2S?
_______________mm
10. How many neutrons are in 35Cl?
_______________ neutrons
For problems 11 through 13, show your work to receive full credit and use the correct number of significant figures in your final answer.
11. The density of nickel is 8.91 g/cm3. Calculate the mass of a nickel ball with a radius of 0.50 mm in grams.
(Ï = 3.1416; Vsphere = 4Ïr3/3)
12. The recommended adult dose of Elixophyllin , a drug used to treat asthma, is 6.00 mg/kg of body mass. Calculate the dose in milligrams for a 134-lb person.
13. It is 273 K outside. Do you need a jacket? Why or why not? (show your work for full credit)
14) Element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. What is the average atomic mass of the element in amu?

isotope38 abundance of 5.07,mass of 37.919

isotope39x,abundance of 15.35,mass of 39.017

isotope 42,abundance of 79.85,mass of 42.111

15. Classify each of the following elements as alkali, alkaline earth, halogen or a noble gas:
a) He ________________________
b) F ________________________
c) Na ________________________
d) Ca ________________________
e) Br ________________________

CHEM 6B Chapter Notes - Chapter 13: Effusion, Junkers J 1, Crystal

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