Gas laws questions and other goodies Flashcards
An E cylinder has a full pressure of 1900 psi. we know that a full E cylinder of O2 will expand to approx 660L. what is the volume if the E cylinder?
and whos law
Boyle
Prove that a full E cylinder of O2 will expand to 660L at atmospheric pressure. first measure the internal capacity of an E cylinder by pouring water into one and measureing the capacity =5L
who’s law
Boyles
A balloon is filled with air and has a pressure of 1 atm, a temp of 00C and a volume of 1L, what is the volume of the baloon at 1000C and a pressure of 1 atm
who law
Charles
A bouncy ball has a temp in the sun of 500C, a volume of 5L and a pressure of 760mmHg. if the pressure is maintained what is the volume at 00C
who’s law
charles
An E cylinder was left in the sun on the loading deck of a hospital. it has a temp of 600C and a pressure of 2500psi. what will the pressure br in the cylinder at temp equilibrium of the OR (150C)
And whos law???
Gay-Lussac’s
a 5 liter scuba tank has 500psi of air when read at 100C in the cold depths of the atlantic. what will the pressure of theis tank be after the divers return to the beach in august (500C)
and who’s law
Gay-Lussacs
what is avogadro’s hyothesis?
1 mole (6.022x1023) of a gas at STP occupies a volume of 22.4L
what law describes- the total pressure exerted by a mixture of gases is the sum of their individual oartial pressures?
Dalton’s LAw of partial pressures
how is Dalton’s law of partial pressures calculated?
atmospheric pressure at sea level
O2
N2
by multiplying the percent times the atmospheric pressure.
ex
O2 21%=0.21
N2 79%= 0.79
so. ……
0. 21 x 760 mmHg= 159.6 mmHg
0. 79 x 760 mmHg= 600.4 mmHg
total = 760 mmHg
(this is at sea level only obviously change the atm pressure according to elevation)
WHat is the partial pressure of O2 and N2O if you are administering a 30/70 ratio
O2
30% = 0.30
0.30 x 760mmHg= 228 mmHg
N2O
70% = 0.70
0.70 x 760 mmHg = 532 mmHg
228 + 532 = 760 mmHg
(this is done assuming that we are at sea leverl do to no atm pressure being provoded in the question)
You have a E cylinder with a volume of 4.5L and a pressure of 2100 psi. If you open that cylinder in normal Atmospheric pressure how much volume will there be?
who’s law
Temp is a constant so it’s boyle’s law
What is normal standard pressure
14.7 psi
=
1 atm
=
760mmHg
what is standard temp?
OoC
=
273 K
one mole of gas occuies what volume?
22.4 L
how long will a tank last at 10Lpm if it has a psi of 1000
0.33 x 1000= 330L
330L/10Lpm
=33min
what is critical temperature?
the temperature above which all gas, cannot be liquefied no matter how much pressure is applied.
To bring the extra badass out what are the critical temperatures for
O2
N2O
N2
add their critical pressures if you DARE!!!!!
CRITICAL TEMPS
N2- 126.3k
O2- 154.6k
N2O - 309.6k
(THESE ARE PLACED IN ASCENDING ORDER COLDEST FIRST TO THE WARMEST LAST)
Pressures are
N2O- 33.5 atm
O2- 49.8 atm
N2O- 71.5 atm
