Ideal Gas Law Practice Problems (Part 1)

[@sandinomichaelangeloaguila3823]

Hi EngrProfPH, I would like to clarify the meaning of "ideal" in the IGL. Basically, a gas will be assumed ideal if the conditions are at higher temperature and lower pressure since at these condition, we can say that the attractive forces within gas molecules are negligible. Also, IGL calculation seems to be the simple approach for gas property calculation. However, we would not generalize that each gas must behave at ideal conditions since we have so called "real" gases which can be evaluated using its compressibility factor.

[@EngineerProfPH]

Yes that is correct..Thank you!💛 God bless!

[@karlvincentlao6493]

salamat ulit boss... muntik na rin ako madale nung last problem... gauge pressure pla hinahanap hahaha....

[@k-lytesmigs5945]

A steady state device has the following conditions of the working substance at the entrance: pressure equals 100 psia and density is 62.4 lbm/ft3. If 10,000 ft3/min of this fluid enters the system, determine the exit velocity if the area exit is 2 ft2?

[@nickoemmanuelvillacruz3090]

Omg thank you this is exactly what im looking right now

[@EngineerProfPH]

You're welcome!💛

[@kimeduarddolormanibo49]

Nice one engineer!

[@EngineerProfPH]

Thank you!💛

[@nickoemmanuelvillacruz3090]

Sir good afternoon. Air is pumped into a cubic foot tank until the pressure is 135 psig. When the pump is stopped, the temperature is 200 degrees F. (a) What is the mass the tank? What is its density? (b) if the air is allowed to cool at 70 degrees F what is the pressure and its density? R constant = 53.342 ft lbf/ lbm R I convert the Psig to P abs, F to R and in^2 to ft^2 then apply the Ideal Gas law i got the mass Then i compute density m/v For the second question i used the mass and the same volume in part 1 to calculate the Pabs And i got the same density Is that right sir?

[@EngineerProfPH]

Yes thats correct. Since the volume is constant after it stopped pumping..

[@nickoemmanuelvillacruz3090]

Thank you sir! More power po sa channel nyo

[@kopikazuya]

Hello po kapag po ba macacancel like yung sa 1bar and 6 bar hindi na po need iabsolute yung pressure?

[@OscarPeterArcuna]

Thank you po so much sir.

[@yumifummi3596]

Sir question, ano po yung basihan sa pag assume ng given pressure is absolute? thank you po.

[@soumybarua997]

Nice

[@EngineerProfPH]

Thank you!💛

[@jasontella-in8918]

Sir Good day. Pwede po magtanong if paano naging 16lb/mol yung 16g/mol?

[@shierwinjuan6643]

same question

[@margieesparza7775]

Sir pano Po malalaman pag perfect yung gas ?

[@reymarkdilana6358]

Engineer prof patulong ahahhah

[@aleaquimson3492]

Sabe sa isang vid PV=nrT daw ano poba talaga?

[@EngineerProfPH]

Hi! Depende po sa given na gas constant. Kapag ang given is universal gas constant (given per mol), use n or the number of moles of a certain gas. If given ka po ng indidvidual gas constant (given per mass), use m or the given mass of that gas. It all depends kung ano po yung given na type of gas constant. Feel free to ask questions. Thank you!☺️

[@溯源-h3j]

Answer to the problems: 10.26434/chemrxiv-2022-5m718-v3

[@dailyvideos8-11]

puede ako makahingi ng notes sa thermo? thanks

[@EM-lm3cc]

Prof engr. May pdf po ba kayo dito?

[@EngineerProfPH]

Hi.. Meron po. Pa browse po sa facebook.com/engineerprofph

[@EM-lm3cc]

@@EngineerProfPH kita kuna po thanks po sir

[@jozylynmanansala8653]

thanks! =)

[@jihyelee6177]

Sir ito nanaman po ako tulong u ba ako😔😔😔😔

[@princesssabela9211]

SIRRRRRRRRRRR OMG MAY DI AKO NAGETSS SAAN PO NAKUHA YUNG 14.7 PSI?? SANA PO MAKA REPLY PO KAYO HSHHSHSHHS

[@EngineerProfPH]

14.7 psi po is standard atmospheric pressure at sea level. 1 atm = 101.325 kPa = 14.7 psi

[@princesssabela9211]

@@EngineerProfPH ah constant po yun?

[@princesssabela9211]

@@EngineerProfPH huhu sorry sir, medyo nalito ako

[@EngineerProfPH]

Yes constant po☺️