TRUE OR FALSE 1. gases can diffuse through other gases but not through liquids 2. heavier gases diffuse slower than lighter gases 3. a gas molecule will not experience friction when it travels through space 4. when gas molecules collide they lose kinetic energy due to friction 5. if the partial pressure of O2 is 40 torr in the blood and 45 torr in the tissues, then O2 will diffuse from the blood into the tissues 6. molecules which are solids at 20.0 oC have weak intermolecular attractive forces 7. a substance with strong attractive forces will have a high heat of vaporization 8. a substance with weak attractive forces will have a high vapor pressure
Ideal and Real Gases
Ideal gases obey conditions of the general gas laws under all states of pressure and temperature. Ideal gases are also named perfect gases. The attributes of ideal gases are as follows,
Gas Laws
Gas laws describe the ways in which volume, temperature, pressure, and other conditions correlate when matter is in a gaseous state. The very first observations about the physical properties of gases was made by Robert Boyle in 1662. Later discoveries were made by Charles, Gay-Lussac, Avogadro, and others. Eventually, these observations were combined to produce the ideal gas law.
Gaseous State
It is well known that matter exists in different forms in our surroundings. There are five known states of matter, such as solids, gases, liquids, plasma and Bose-Einstein condensate. The last two are known newly in the recent days. Thus, the detailed forms of matter studied are solids, gases and liquids. The best example of a substance that is present in different states is water. It is solid ice, gaseous vapor or steam and liquid water depending on the temperature and pressure conditions. This is due to the difference in the intermolecular forces and distances. The occurrence of three different phases is due to the difference in the two major forces, the force which tends to tightly hold molecules i.e., forces of attraction and the disruptive forces obtained from the thermal energy of molecules.
TRUE OR FALSE
1. gases can diffuse through other gases but not through liquids
2. heavier gases diffuse slower than lighter gases
3. a gas molecule will not experience friction when it travels through space
4. when gas molecules collide they lose kinetic energy due to friction
5. if the partial pressure of O2 is 40 torr in the blood and 45 torr in the tissues, then O2 will diffuse from the blood into the tissues
6. molecules which are solids at 20.0 oC have weak intermolecular attractive forces
7. a substance with strong attractive forces will have a high heat of vaporization
8. a substance with weak attractive forces will have a high vapor pressure
9. if two molecules have the same mass and the same attractive forces, then the one with a more spherical shape will have a higher boiling point
10. most solids are crystalline solids and slowly melt over a range of temperatures
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True or false - if the partial pressure of O2 is 40 torr in the blood and 45 torr in the tissues, then O2 will diffuse from the tissues into the blood
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