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CU chemistry test unit 3 chapters 11 and 5

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Question
Answer
conversion of mmHg to atm   760mmHg = 1 atm  
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Conversion of mmhg to bar   760mmHg = 1.01325 bar  
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conversion of atm to kPa   1 atm = 101.325 kPa  
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What is a pascal (Pa), relation of a kPa to Pa and relation of bar to Pa.   A pascal is one newton-meter, a kPa is 1000 Pa, a bar is 100000 Pa.  
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What is boyle's law? what is constant?   P1V1=P2V2 with temperature constant  
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What is charles law adn what is constant   V1/T1=V2/T2 with pressure constant  
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PV=nRT what do each stand for?   P=pressure V=volume n=moles R=gas constant T=temperature  
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the general gas law   PV/T=P2V2/T2  
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THE ideal gas law   PV=nRT  
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WHat are the density of gases equations?   d=m/v=PM/RT PV=(m/M)RT  
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Dalton's law   P(total)=P(1)+P(2)+P(3)...... which can translate to P(total)=(n1+n2+n3)(RT/V) or P(total)=n(total)(RT/V)  
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Average kinetic energy can be shown by these equations   1/2mu^2(speed is average)or KE(average)=3/2RT which leads to >>> The square root of (u^2)=the square root of (3RT/M) where M = molar mass  
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The gas constant when dealing with energy is what??   8.314 J/K*mol  
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Graham's law....   Rate of effusion of gas 1/ rate of effusion of gas 2= the square root of (molar mass of gas 2/molar mass of gas 1)  
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Kinetic engergy and different types of kinetic engergy   Energy associated with motion. thermal energy, mechanical energy, electrical energy, and acoustic energy.  
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Thermal energy   the motion of atoms molecules r ions at the submicroscopic level  
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mechanical energy   the motion of macroscopic objects like moving a tennis ball or an automobile  
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electrical energy   the movement of electrons through a conductor  
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acoustic energy   the compression and expansion of the spaces between molecules in the transmission of sound.  
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potential energy and different types of potential energy   results from an objects position. gravitational energy, chemical energy, electrostatic energy  
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gravitational energy   energy posssesed by a ball held above the floor and by water at the top of a waterfall  
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chemical energy   energy stored in fuels  
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electrostatic energy   the energy associated with the separation of two electrical charges  
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Law of conservation of energy   energy can neither be created or destroyed. The total energy of the universe is constant  
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System is   defined as an object or collection of objects being studied.  
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Surroundings   include everything outside the system that can exchange energy and/or matter with the system.  
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thermal equilibrium   point when at a macroscopic scale no temperature change is evident, yet at the microscopic level change is still going on.  
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exothermic process   energy is transferred as heat from a system ot its surroundings. the energy of the system decreases and the energy of hte surroundings increases  
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an endothermic process   is the opposite of an exothermic process. Energy is transferred as heat from the surroundings to the system, increasing the energy of the system, decreasing the energy of the surroundings.  
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joule and its relation to calorie's   Kg*m^2/s^2 1 calorie is equal to 4.184 joules  
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specific heat capacity (C)   the energy transferred as heat that is required to rais the temperature of 1 gram of a substance by one kelven  
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equation used with specific heat   q=C*m*Change in T  
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How is change in temperature calculated?   Change in temperature = T(final)-T(initial)  
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When dealing with a metal in water.... what simple equation ensues? why?   q(water)+q(metal)=0 because of the law of thermodynamics no energy is created or destroyed, and theoretically if all is transfered as heat then it will completely transfer over.  
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Heat of fusion   the energy transferred as heat that is required to convert a substance form a solid at its melting point to a liquid  
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Heat of vaporization   the energy transferred as heat to convert a liquid at its boiling point to a gas.  
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sublimation   the direct conversion of a solid to a gas  
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Heat of fusion equation   q=heat of fusion x mass  
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