b. If the oxygen flow to the patient is adjusted to 6.00 L/min at room temperatu
ID: 1004920 • Letter: B
Question
b. If the oxygen flow to the patient is adjusted to 6.00 L/min at room temperature and 0.925 atm, how long will the tank of gas last? 19. The pressure within a 4.50-Lballoon is 1.10 atm. If the vol- ume of the balloon increases to 9.95 L, what will the final pressure within the balloon be if the temperature does not change? 20 A gas sample has a volume of 0.954 Lat a pressure of 764 mmHg. What would be the pressure of the gas if the vol- 3 ume is changed to 477 mL? that the amount and the temperature of the gas remain constant. has a 21. A balloon with air at pressure of 0.994 atm volume of 1.88 L. What will be the volume of the balloon if the pressure is changed to 0.497 atm? Assume that the 3 temperature and the amount of the gas remain constant. Charles's Law is 5.90 L at 22. A balloon is filled with helium. Its volume no pres- 26 °C. What will its volume be at 78 oC, assuming sure change? occupies volume of 37 23. A gas at a temperature of 100 c assuming no volume be at 154 mL. change in pressure? at constant pressure 24. A sample of gas at STP is to be heated temper until its volume triples. What will the final gas be? is about 1.00 L. If the air is drawn A normal breath of air will be new at °C and is ed to 37 oC, pressure and amount volume of the Assume that the If the air is drawn in constant noExplanation / Answer
20.
Initial volume of gas V1 =0.954 L
Final volume of gas V2 = 477ml = 0.477L
Initial pressure of gas P1 =764mmHg
Final pressure of gas P2 =?
Amount of temperature of gas remain constant
According to Boyle’s Law at constant temperature
P1/P2 = V2/V1
P2 = P1 x V1/ V2
P2 = (764mmHg x 0.954 L)/ = 0.477L
= 1528mmHg
The pressure of gas would be 1528mmHg
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