# Chem 1010 TEST 4

 .remove_background_ad { border: 1px solid #555555; padding: .75em; margin: .75em; background-color: #e7e7e7; } .rmbg_image { max-height: 80px; } 5 properties of gasas Gases have an indefinite shapeGases can expandGases can compressGases have low densitiesGases diffuse uniformly throughout their containers All temp. calculations must be in? Kelvin!!!Celcius + 273 The result of constantly moving molecules striking the inside wall of the container Gas pressure collide with wall less frequently and less energy, results in a lower pressure molecules that move more slowly collide more often, so the gas pressure increases Molecules move more rapidly Measured by an instrument called a barometer Atmospheric pressure Standard pressure of Atmosphere? 1 ATM Standard pressure of millimeters of Hg? 760 mm Hg Standard pressure of torr 760 torr (exactly) Equal standard pressure? 1 ATM= 760 mHg= 760 torr Volume and pressure are? inversely proportional. as pressure goes up, volume goes down. Boyle's law is written? P1V1=P2V2 As pressure goes up, temp? Goes up! Charles Law is written? V1/T1 = V2/T2 n (mol) and P (pressure): As one goes up, ? so does the other At constant pressure, the volume, V, occupied by a gas sample is directly proportional to ? the Kelvin temp. V/T = K At constant vlume, the pressure, P, exerted by a gas sample is directly proportional to ? the Kelvin temp. P/T = K 3 gas laws can be combined to represent the relationship between the three variables when they all change simultaneously The combined gas law molecules of water in constant motion some strike the surface with enough energy to escape the gas phase when in a closed container, the vapor is collected in the space above the liquid Vapor pressure vapor pressure of water is dependent on? the temp but not the volume of water.increases as temp increases Ptotal = P1+P2+P3+....... Daltons Law of partial pressures(587torr N + 158torr O + 7 torr Ar = 752 torr) a gas that always behaves in a predictable and consistent manner an Ideal gas behave very much like the ideal gas model except at low T and high P Real gases Always use what Conversions for.. P (pressure)= V (volume)= N (mole)= T (temp)= P= ATMV= LiterN= molT= Kelvin demonstrate rapid motion, move in straight lines, and travel in random directions gas molecules the average kinetic energy of gas particles is proportional to the ? Kelvin temp have no attraction for one another. After colliding they simply bounce away in a different direction Gas molecules An ideal gas at absolute zero has? No kinetic energy and therefore no motion in a collision between gas particles, there is no net loss of kinetic energy elastic collisions  referred to as the Ideal Gas constant, R .0821 L atm/mol K PV = nRT Ideal gas constant, R mole equation? n = PV/RT .remove_background_ad { border: 1px solid #555555; padding: .75em; margin: .75em; background-color: #e7e7e7; } .rmbg_image { max-height: 80px; } AuthorAnonymous ID179223 Card SetChem 1010 TEST 4 DescriptionTHE GASEOUS STATE Updated2012-10-23T02:50:31Z Show Answers