Wednesday
April 16, 2014

Search: Chemistry (Internal Energy)

Number of results: 115,768

Chemistry
internal energy: stored in bonds and mass. enthalpy: that portion of internal energy which can be released (or absorbed) during a chemical reaction.
Wednesday, January 11, 2012 at 7:42am by bobpursley

Chemistry
What is the different b/n internal energy(^E) and enthalpy(^H)? Under what circumstances are internal energy and enthalpy nearly equal?
Wednesday, January 11, 2012 at 7:42am by Ethio

Physics
It is the friction force times the distance travelled. This is the work done against the friction force, which is work transferred to heat. If you look at the sum of kinetic and potential energy, then this quantity is not conserved, because of friction. Without friction, the ...
Saturday, September 25, 2010 at 1:06pm by Count Iblis

Physics
If a total mass of 11.1 kg falls 5.23 m and all of the mechanical energy is converted to internal energy, by how much will the internal energy of the water increase? The acceleration of gravity is 9.81 m/s 2 . Assume no energy is transferred as heat out of the vessel to the ...
Sunday, February 12, 2012 at 10:46pm by Joe

Physics
The amount of internal energy needed to raise the temperature of 0.26 kg of water by 0.3C is 326.5 J. How fast must a 0.26 kg baseball travel in order for its kinetic energy to equal this internal energy? Answer in units of m/s
Thursday, March 14, 2013 at 9:14am by Ted

Physics(Please respond)
A system does 210 J of work on its environment and gains 80.6 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment. U = Q - W Where U is the change in the internal energy of the system, Q is the heat/energy gained from ...
Friday, June 22, 2012 at 11:26am by Hannah

Physics
A force of 310 N is applied horizontally to a crate in order to displace the crate 45.0 m across a level floor at a constant velocity. As a result of this work, the crate's internal energy is increased by an amount equal to 12 percent of the crate's initial internal energy. ...
Tuesday, December 4, 2012 at 5:14pm by Casey

Chemistry
When 0.312g of glucose was burned in a bomb calorimeter (heat capacity 641 J/K) the temperature rose by 7.739 K. Calculate the standard enthalpy of combustion and the standard internal energy of combustion. I've calculated the standard enthalpy but am unsure of how to go about...
Tuesday, September 25, 2012 at 11:39pm by Kalli

Science PHYSICS
Ok thanks, so the transfer of energy is work done by the body? to clarify ... As the diver walks up the steps chemical energy is transferd through work and converts into GPE and kinetic energy. what is the energy transfer to begin the dive? chemical? once the dive has begun ...
Tuesday, April 27, 2010 at 10:35am by Alice

Chemistry
What is the different b/n change in internal energy(^E) and enthalpy change(^H) ? Under what circumstances are change of internal energy(^E) and enthalpy change(^H)?
Wednesday, January 11, 2012 at 1:34pm by Chemo

physics
a worker drives a .551 kg spike into a rail tie with a 2.55 kg sledgehammer. The hammer hits the spke with a speed of 62.1 m/s. if one fourth of the hammers kinetic energy is converted to the internal energy of the hammer and soike, how much does the total internal energy ...
Monday, February 7, 2011 at 12:50am by Emily

Physics(Please respond)
A system does 210 J of work on its environment and gains 80.6 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment. Physics(Please respond) - Elena, Thursday, June 21, 2012 at 2:33am U = Q - W Where U is the change in the...
Thursday, June 21, 2012 at 9:01pm by Hannah

Physics(Please respond)
ΔU = Q - W Where ΔU is the change in the internal energy of the system, Q is the heat/energy gained from the surroundings, W is the work done on the environment. ΔU =80.6-210=-129.4 J. The internal energy decreased by 129.4 Joules which corresponds to a ...
Wednesday, June 20, 2012 at 11:51am by Elena

Physics(Please respond)
ΔU = Q - W Where ΔU is the change in the internal energy of the system, Q is the heat/energy gained from the surroundings, W is the work done on the environment. ΔU =80.6-210=-129.4 J. The internal energy decreased by 129.4 Joules which corresponds to a ...
Wednesday, June 20, 2012 at 2:46pm by Elena

Chemistry
If 244 KJ heat is released and 35 KJ WORK done on the system.calculte (a)change internal energy and change in enthalpy of system? (b) change in internal energy and change in enthalpy of the suround ?
Tuesday, January 17, 2012 at 3:42pm by Chemo

physics
Compressed air can be pumped underground into huge caverns as a form of energy storage. The volume of a cavern is 5.60 105 m3, and the pressure of the air in it is 8.40 106 Pa. Assume that air is a diatomic ideal gas whose internal energy U is given by U = 5/2 nRT. If one home...
Saturday, April 26, 2008 at 1:24pm by Karen

Physics
Compressed air can be pumped underground into huge caverns as a form of energy storage. The volume of a cavern is 5.60 105 m3, and the pressure of the air in it is 8.40 106 Pa. Assume that air is a diatomic ideal gas whose internal energy U is given by U = 5/2 nRT. If one home...
Sunday, April 27, 2008 at 12:56pm by Janaih

Physics Can you please get me started
Her only source of energy during this event was internal. She was not eating anything. Therefore her loss of internal energy went to work done and to heat lost to the surroundings. 8.8 * 10^5 - 5.5 * 10^5 = 3.3 * 10^5 Joules
Thursday, November 29, 2012 at 10:31pm by Damon

physics help!!
A body at given uniform temperature of 300K and internal energy 8x10^6 J is split in two equal halves: a)Has any heat been exchanged b)What is the temperature of each half? c)What is internal energy of each half? K=Kelvin
Wednesday, November 17, 2010 at 10:27pm by carla

chemistry
Internal energy = heat + work Work = Internal energy - heat heat = -5074.1kJ (combustion is always exothermic, so negative) work = -5084.3 kJ - (-5074.1) kJ =
Sunday, February 20, 2011 at 8:18pm by Liz

Chemistry (Internal Energy)
5 kg of steam contained within a piston-cylinder assembly undergoes an expansion from state 1, where the specific internal energy U(1) is = 2710 [kJ/kg] to state 2, where U(2) = 2660 [kJ/kg]. During the process, there is heat transfer to the steam with a magnitude of 80 [kJ]. ...
Tuesday, October 2, 2012 at 11:26pm by Simon

Physics
Question: The amount of internal energy needed to raise the temperature of .25 kg of water by 0.2 degrees Celsius is 209.3 J. How fast must a 0.25 kg baseball travel in order for its kinetic energy to equal this internal energy? KE = (.5)(m)(v^2) 209.3 J = (.5)(.25kg)(v^2) ...
Monday, February 15, 2010 at 7:26pm by mike

Physics
A worker drives a 0.509 kg spike into a rail tie with a 2.08 kg sledgehammer. The hammer hits the spike with a speed of 63.3 m/s. If one fifth of the hammers kinetic energy is converted to the internal energy of the hammer and spike, how much does the total internal ...
Wednesday, February 1, 2012 at 7:54pm by Angel

physics
A 200 gram ball gets dropped from a roof at 15 meters high. A boy on the ground catches it. If 10 percent is translated to internal energy, then what was the increase of internal energy? Is it safe to be playing ball from the roof top?
Tuesday, February 26, 2013 at 10:53pm by Anonymous

physical chemistry
A sample of the sugar D-ribose (C5H10O5) of mass 0.727g was placed in a constant volume calorimeter and then ignited in the prescence of excess oxygen. The temperature rose by 0.910K In a separate experiment in the same calorimeter, the combustion of 0.825g of benzoic acid for...
Thursday, February 23, 2012 at 11:46pm by nicole

Integrated Physics and Chemistry
The internal energy of a material is determined by.. A)its temperature B)the kinetic energy of its molecules C)the potential energy of its molecules D)the combined amount of kinetic and potential energy of its molecules
Tuesday, April 19, 2011 at 10:05am by Ashley

PHYSICS
Heat(in)- Work(out) = Change in internal energy Heat in = Work + change in Internal energy You added the right two numbers but should have come up with 700 J
Thursday, October 16, 2008 at 4:26pm by drwls

element of chemical engineering
the specific internal energy of a fluid is 200 cal/g .if the fluid leaves a system at a flow rate of 5 g/min ,at what rate does it transport internal energy out of the system?
Wednesday, July 3, 2013 at 12:45pm by mousumi

Physics
The internal energy of a gas is 585 J. The gas is compressed adiabatically, and its volume decreases by 137 cm3. If the pressure applied on the gas during compression is 2.65 atm, what is the internal energy of the gas after the adiabatic compression?
Saturday, January 18, 2014 at 3:10pm by Kimmy

Physics
The internal energy of a gas is 585 J. The gas is compressed adiabatically, and its volume decreases by 137 cm3. If the pressure applied on the gas during compression is 2.65 atm, what is the internal energy of the gas after the adiabatic compression?
Saturday, January 25, 2014 at 1:04pm by Kimmy

Physics
when temp increase,that mean average KE increase,if state change from solid to liquid or liquid to solid ,potential energy increase For IDEAL GAS,it wont change to any state under HIGH TEMP LOW PRESSURE,so average KE increase but potential energy remains unchange as far as we ...
Tuesday, January 17, 2012 at 11:56pm by amper

chemistry
50J of energy is transferred as work is done on the system. 30J of heat is also absorbed by the system. Calculate the change in internal energy.
Sunday, January 23, 2011 at 11:55am by jaycab

physics
The change in internal energy (U) is equal to heat in (Q) minus work out (W). The key to this probloem is knowing that the internal energy per mole of a MONATOMIC gas is (3/2) R T. Thus, delta Q = (3/2)*n* R*(delta T) = 1300 - 2040 = -740 J n is the number of moles and R = 8....
Sunday, October 4, 2009 at 2:13am by drwls

chemistry
internal energy, U, is the sum heat, Q, and work, W: U = Q + W U = 242 - 193 U = + 49 J >>>sign conventions for U = Q + W: *heat absorbed by the system is (+) *heat released by the system is (-) *work done BY the system is (-) *work done ON the system is (+) *work ...
Sunday, October 24, 2010 at 11:32pm by jai

Thermodynamic Physics
When a driver brakes an automobile, friction between the brake disks and the brake pads converts part of the car's translational kinetic energy to internal energy. If a 1500 kg automobile traveling at 42 m/s comes to a halt after its brakes are applied, how much can the ...
Sunday, January 13, 2013 at 10:25pm by Kristal

physics
When a driver brakes an automobile, friction between the brake disks and the brake pads converts part of the car's translational kinetic energy to internal energy. If a 1280 kg automobile traveling at 30.8 m/s comes to a halt after its brakes are applied, how much can the ...
Thursday, March 14, 2013 at 6:56pm by Jayde Larson

Physics Last Question HEEEELLLPPP !
#1 The internal energy of the gas in a gasoline engines cylinder decreases by 295 J. If 47.0 J of work is done by the gas, how much energy is transferred as heat? #2 If an ideal gas does work on its surroundings: a. The internal energy of the gas increases b. The volume of ...
Sunday, December 12, 2010 at 5:19pm by Jarrid

Physics
When a driver brakes an automobile, friction between the brake disks and the brake pads converts part of the car's translational kinetic energy to internal energy. If a 1500 kg automobile traveling at 42 m/s comes to a halt after its brakes are applied, how much can the ...
Sunday, January 13, 2013 at 6:49pm by I'm going to die please help

physics
Knowing the molecular mass is not enough for the internal energy. You need to know that it is a diatomic gas, for which the molar specific heat at constant volume (Cv) is (3/2)R The internal energy is U = Cv*n*T = (3/2)*n*R*T T is the absolute temperature, 310K inside the body...
Thursday, November 18, 2010 at 12:27am by drwls

Physics
A worker drives a 0.460 kg spike into a rail tie with a 2.16 kg sledgehammer. The hammer hits the spike with a speed of 64.5 m/s. If one third of the hammers kinetic en- ergy is converted to the internal energy of the hammer and spike, how much does the total internal energy ...
Thursday, March 14, 2013 at 9:12am by Ted

Chemistry
A pressurized can of whipped cream has an internal pressure of 1.080 atm at 25C. If it is placed in a freezer at -8C, what is the new value for its internal pressure What formula do I use for internal pressure?
Thursday, November 1, 2012 at 7:07pm by Kellina

Physics ~Thermodynamics~
* Pressure * 1) what other ways can the pressure of a gas be changed? * Internal Energy * 2) A cup of hot tea is poured from a teapot, and a swimming pool if filled with cold water. a) Which one has a higher internal energy? b) Which has a higher average of kinetic energy? * ...
Tuesday, March 5, 2013 at 6:15pm by Isis

Physics
Heat energy is the energy associated with changes in internal energy. If no phase changes occur, the transfer of heat energy is accompanied by a change in?
Wednesday, June 8, 2011 at 8:20pm by Billy

Physics help!
Yes. it is true. In case of an ideal gas the internal eergy is a function of temperature only. But, in all cases, you can say that the internal energy is related to temperature.
Friday, April 3, 2009 at 1:30pm by Count Iblis

physics
Compute the hammer's kinetic energy. 1/4 of that energy is converted to hammer and spike internal energy, or so they say. The rest (3/4) supposedly does work on the rail tie.
Monday, February 7, 2011 at 12:50am by drwls

Integrated Physics and Chemistry
Matching... Heat engine Heat pump Boiler Thermostat -a heating appliance that uses heat energy released from fossil fuels to warm water for use in radiant or convection heating systems -a appliacne that controls the maintenance temperature of a heating system -an appliance ...
Tuesday, April 19, 2011 at 10:02am by Ashley

chemistry
Internal energy = heat + work heat = -196 kJ work = 4200 kJ Internal energy = -196 kJ + 4200 kJ
Tuesday, February 8, 2011 at 2:38pm by Liz

Chem
Part A : This is the first law of thermodynamics question. case 1 - the system expands and the surroundings get hotter case 2 - the system expands and the surroundgins get colder case 3 - the system contracts and the surroundings get hotter case 4 - the system contracts and ...
Thursday, November 4, 2010 at 1:30am by AY

physics
Why wouldn't it be 10 joules? No work was done on friction, internal energy, or potential energy.
Sunday, April 4, 2010 at 8:12pm by bobpursley

Physics
A jogger's internal energy changes because he performs 6.80 105 J of work and gives off 4.9 105 J of heat. However, to cause the same change in his internal energy while walking, he must do 8.10 105 J of work. Determine the magnitude of the heat given off while walking. J
Friday, April 18, 2008 at 4:28am by Johnson

Chemistry
What is the different b/n change in internal energy(^E) and enthalpy change(^H)? Under what circumestance are change in energy(^E) and enthalpy change(^H) nearly equal? Thanks for your helps.
Wednesday, January 11, 2012 at 7:42am by Ethio

chemistry
Calculate the change in internal energy for a system that absorbs 242 J of heat and does 193 J of work on the surroundings...
Sunday, October 24, 2010 at 11:32pm by kellie

Chemistry
What is the change in internal energy of a system that does 7.02 kj of work and absorbs 888 j of heat?
Saturday, October 26, 2013 at 11:04pm by Grace Peterson

chemistry
What is the change in the internal energy of the system when 1.243 mol of NH 3(g) is formed from N 2(g) and H 2(g) at 25 degrees C and 1.0 atm?
Sunday, March 30, 2014 at 6:33pm by chemmom

physics
(1/2) m v^2 The stopping distance and time don't matter. Initial kinetic energy ends up as heat (internal energy).
Saturday, March 23, 2013 at 5:41pm by drwls

Chemistry
What is the change in internal energy (in J) of a system that absorbs 0.677 kJ of heat from its surroundings and has 0.438 kcal of work done on it?
Tuesday, October 19, 2010 at 11:47pm by Ashley

Chemistry
What is the change in internal energy (in J) of a system that absorbs 0.677 kJ of heat from its surroundings and has 0.438 kcal of work done on it?
Wednesday, October 20, 2010 at 1:51pm by Ashley

Chemistry
What is the change in internal energy (in J) of a system that absorbs 0.677 kJ of heat from its surroundings and has 0.438 kcal of work done on it?
Friday, October 22, 2010 at 7:12pm by Nevaeh

Chemistry
A gas sample absorbs 53KJ of heat and does 18 KJ of work. Calculate the change in its internal energy
Tuesday, August 14, 2012 at 12:27pm by Gisselle

Chemistry
As a system increases in volume, it absorbs 52.5 J of energy in the form of heat from the surroundings. The piston is working against a pressure of 0.500 atm. The final volume of the system is 58.0 L. What was the initial volume of the system if the internal energy of the ...
Thursday, October 13, 2011 at 1:59am by Sam

College Chemistry
As a system increases in volume, it absorbs 52.5 J of energy in the form of heat from the surroundings. The piston is working against a pressure of 0.500 atm. The final volume of the system is 58.0 L. What was the initial volume of the system if the internal energy of the ...
Monday, October 31, 2011 at 3:18pm by Amanda

physics
A system does 196 J of work on its environment and gains 40 J of heat in the process. (a) What is the change in the internal energy of the system? J (b) What is the change in the internal energy of the environment? J I thought the answer would be +40 for the system and -40 for...
Saturday, April 26, 2008 at 1:29pm by Will

Physics
Find the total change in the internal energy of a gas that is subjected to the following two-step process. In the first step the gas is made to go through isochoric heating until it gains 5363 J and its pressure is 2.92 105 Pa. In the second step it is subjected to isobaric ...
Monday, March 24, 2014 at 12:42pm by Mark

Physics(Please respond)
Enviromentenergy=- change in internalwork Rationale: if the internal energy increased by xXXX, then the environment must have lost that much energy.
Friday, June 22, 2012 at 11:26am by bobpursley

chemistry
Internal energy is denoted by the letter U. true/false false
Thursday, December 13, 2012 at 12:29pm by Anonymous

Physics (12th Grade)
If it is heated at constant pressure, the volume must increase heat in = change in internal energy + work out dQ = dU + dW P V = n R T constant pressure P dV = n R dT = work out Change in internal energy = n Cv dT = n(5/2)R dT for diatomic gas total heat required = n R dT + (5...
Monday, April 9, 2012 at 12:49am by Damon

chemistry
Internal energy = -196 kJ + 4200 kJ
Tuesday, February 8, 2011 at 2:38pm by Anonymous

Physics
Initially 1.200 mol of an ideal gas in a container occupies a volume of 3.50 l at a pressure of 3.30 atm with an internal energy U1 = 547.2 J. The gas is cooled at a constant volume until its pressure is 1.80 atm. Then it is allowed to expand at constant pressure until its ...
Friday, November 16, 2012 at 8:25pm by Erika

physics
Initially 1.200 mol of an ideal gas in a container occupies a volume of 3.50 l at a pressure of 3.30 atm with an internal energy U1 = 547.2 J. The gas is cooled at a constant volume until its pressure is 1.80 atm. Then it is allowed to expand at constant pressure until its ...
Sunday, November 18, 2012 at 1:40pm by chelsea

chemistry
by the way, how can you tell if work is 0 for 2 mol of solid iron (C = 25:1 J/(molK)) is heated from 20C to 200C. How much does its internal energy change?
Thursday, March 11, 2010 at 4:01am by eng

physics 2
A system consists of 4.8 mol of an ideal monatomic gas at 375 K. (a) How much heat must be added to the system to double its internal energy at constant pressure? ? kJ (b) How much heat must be added to the system to double its internal energy at constant volume? ? kJ
Monday, December 15, 2008 at 12:16am by kelsey lauren

chemistry
A system performs 120J work with no heat supplied to it. Calculate the change in internal energy of the system.
Sunday, January 23, 2011 at 11:51am by jaycab

physics
The temperature of 7.10 mol of an ideal monatomic gas is raised 15.0 K in an adiabatic process. What are (a) the work W done by the gas, (b) the energy transferred as heat Q, (c) the change Eint in internal energy of the gas, and (d) the change K in the average kinetic ...
Wednesday, April 8, 2009 at 6:54am by sweety

physics
The temperature of 7.10 mol of an ideal monatomic gas is raised 15.0 K in an adiabatic process. What are (a) the work W done by the gas, (b) the energy transferred as heat Q, (c) the change Eint in internal energy of the gas, and (d) the change K in the average kinetic ...
Wednesday, April 8, 2009 at 9:21pm by sweety

Chemistry
What is the change in internal energy of a system that releases 1275 J of heat to the surroundings and is compressed so that 235 J of work are done on the system?
Friday, March 11, 2011 at 4:58pm by Katie

chemistry
In a certain process, the internal energy of a system increases 40.7 J and the quantity of work the system does on the surroundings is 78.9 J. What is q?
Monday, March 21, 2011 at 11:22pm by Kamila

Physics
Internal energy is U=3nRT/2 => chage in internal energy is ΔU=3nRΔT/2. From the ideal gas law PV=nRT => nRΔT=nR(T2-T1)=p2V2 =p1V1=p(V2-V1) => ΔU=3nRΔT/2=3p(V2-V1)/2=3210⁵(2.5-1)/2=4.510⁵ J
Thursday, November 22, 2012 at 6:33pm by Elena

Physics
Internal energy is U=3nRT/2 => chage in internal energy is ΔU=3nRΔT/2. From the ideal gas law PV=nRT => nRΔT=nR(T2-T1)=p2V2 =p1V1=p(V2-V1) => ΔU=3nRΔT/2=3p(V2-V1)/2=3210⁵(2.5-1)/2=4.510⁵ J
Thursday, November 22, 2012 at 8:59pm by Elena

Physics
Internal energy is U=3nRT/2 => chage in internal energy is ΔU=3nRΔT/2. From the ideal gas law PV=nRT => nRΔT=nR(T2-T1)=p2V2 =p1V1=p(V2-V1) => ΔU=3nRΔT/2=3p(V2-V1)/2=3210⁵(2.5-1)/2=4.510⁵ J
Friday, November 23, 2012 at 5:15pm by Elena

Physics
Internal energy is U=3nRT/2 => chage in internal energy is ΔU=3nRΔT/2. From the ideal gas law PV=nRT => nRΔT=nR(T2-T1)=p2V2 =p1V1=p(V2-V1) => ΔU=3nRΔT/2=3p(V2-V1)/2=3210⁵(2.5-1)/2=4.510⁵ J
Saturday, November 24, 2012 at 5:50pm by Elena

thermal physics
The temperature of 7.10 mol of an ideal monatomic gas is raised 15.0 K in an adiabatic process. What are (a) the work W done by the gas, (b) the energy transferred as heat Q, (c) the change Eint in internal energy of the gas, and (d) the change K in the average kinetic ...
Thursday, April 9, 2009 at 5:26am by chirayu

chemistry
when a ball is dropped throuh a height, its potential energy changes. Suppose all this energy gets converted into internal energyof the ball once it has stopped bouncing and the specfic heat of the vall is 0.850 j/g-k(no heat loss to the environment). Calculate the height from...
Monday, September 17, 2012 at 1:05pm by gary

Thermodynamics
In exercising, a weight lifter loses 0.100 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. The work done in lifting weights is 1.30 x 10^5 J. (a) Assuming that the latent heat of vaporization of perspiration is 2....
Monday, April 16, 2007 at 5:20pm by Louise

physics
A system undergoes a two-step process. In the first step, the internal energy of the system increases by 368 J when 144 J of work is done on the system. In the second step, the internal energy of the system increases by 24 J when 248 J of work is done on the system. (a) For ...
Saturday, April 26, 2008 at 1:30pm by Will

PHYSICS NEED HELP FAST
A 150KG STEEL ROD IN A BUILDING UNDER CONSTRUCTION SUPPORTS A LOAD OF 6050KG. DURING THE DSY THE RODS TEMP. INCREASES FROM 22C TO 47C CAUSING THE ROD TO THERMAALLY EXPAND AND RAISE THE LOAD 5.5mm. FIND THE EGERHU TRANSFER AS HEAT TO OR FROM THE ROD. THE SPECIFIC HEAT CAPACITY ...
Wednesday, March 2, 2011 at 2:53pm by ricki

college chemistry
Use standard enthalpies of formation to determine Horxn for: 2NH3(g) + 3O2(g) + 2CH4(g) 2HCN(g) + 6H2O(g) in kilojoules. Find the change in internal energy for this reaction in kJ
Monday, October 18, 2010 at 5:51pm by jake

physics
The temperature of 6.80 mol of an ideal monatomic gas is raised 12.0 K in an adiabatic process. What are (a) the work W done by the gas, (b) the energy transferred as heat Q, (c) the change ΔEint in internal energy of the gas, and (d) the change ΔK in the average ...
Thursday, November 11, 2010 at 8:28am by san

physics
The temperature of 4.60 mol of an ideal monatomic gas is raised 15.0 K in an adiabatic process. What are (a) the work W done by the gas, (b) the energy transferred as heat Q, (c) the change ΔEint in internal energy of the gas, and (d) the change ΔK in the average ...
Thursday, April 21, 2011 at 10:09am by tony

physics
The temperature of 4.60 mol of an ideal monatomic gas is raised 15.0 K in an adiabatic process. What are (a) the work W done by the gas, (b) the energy transferred as heat Q, (c) the change ΔEint in internal energy of the gas, and (d) the change ΔK in the average ...
Thursday, April 21, 2011 at 7:22pm by tony

physics
The temperature of 4.60 mol of an ideal monatomic gas is raised 15.0 K in an adiabatic process. What are (a) the work W done by the gas, (b) the energy transferred as heat Q, (c) the change ΔEint in internal energy of the gas, and (d) the change ΔK in the average ...
Friday, April 22, 2011 at 7:25am by niki

physics
The temperature of 2.10 mol of an ideal monatomic gas is raised 17.0 K in an adiabatic process. What are (a) the work W done by the gas, (b) the energy transferred as heat Q, (c) the change ΔEint in internal energy of the gas, and (d) the change ΔK in the average ...
Monday, April 23, 2012 at 11:23pm by Anonymous

Science PHYSICS
I am trying to gain a understanding of the transfers and conversions of energy whilst the subject (being a diver) goes through its motions. Maybe i should be clearer .... SO as the diver makes his way to the top of the steps chemical energy is transferred from the body to the...
Tuesday, April 27, 2010 at 10:35am by Alice

Chemistry
If the internal energy of a thermodynamic system is decreased by 300 J when 75 J of work is done on the system, how much heat was transferred, and in which direction, to or from the system?
Sunday, November 2, 2008 at 3:28pm by N/A

Chemistry
A pressurized can of whipped cream has an internal pressure of 1.080 atm at 25C. If it is placed in a freezer at -8C, what is the new value for its internal pressure (in atmospheres)?
Thursday, November 1, 2012 at 10:01pm by Brandon

Chemistry
Use standard enthalpies of formation to determine ΔHorxnfor: 3NO2(g) + H2O(l) → 2HNO3(aq) + NO(g) -133.5 = Delta H Find the change in internal energy for this reactioion.. ???? In KJ
Thursday, February 27, 2014 at 6:27pm by Steve

Chemistry
ΔE = q - w ΔE is the change in internal energy of a system q is the heat flowing into the system w is the work being done by the system The 2424 J is released to the surroundings. It should be assigned a negative sign. The 6 KJ is work done against the surroundings. ...
Friday, October 9, 2009 at 6:49pm by GK

physics
is it possible for the heat to flow even if the internal energies of the two objects are the same? explain. i said yes because the flow of heat depends on an object's temperature and two objects can have the same internal energy but different temperatures. is this right
Monday, April 21, 2008 at 8:17pm by sake

thermodyn. please check work
You have to define what the system is. In case of 1) if I take the system to be the nail, then W = 0 Q = positive T = Positive. By definition, work is the change in itnernal energy due to a change in the external parameters of a system. In case of the nail, the external ...
Saturday, August 15, 2009 at 10:26pm by Count Iblis

chemistry
An 80.0-gram sample of a gas was heated from 25 C to 225 C. During this process, 346 J of work was done by the system and its internal energy increased by 8905 J. What is the specific heat of the gas?
Thursday, June 21, 2012 at 9:02pm by cassie

chemistry
Gaseous hydrazine reacts with a gas X to form the gases nitrogen and HX by way of the following reaction: NH (g)+2X (g)=N (g)+4HX(g) The enthalpy change for Reaction 1 is −1180 kJ mol−1. Sketch or try and layout a fully labelled diagram showing how the internal ...
Tuesday, January 25, 2011 at 4:58am by James Holland

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