CHEMHW2

2 points 4 points 2 points 4 points 4 points 2 points 2 points 4 points 4 points 4 points 4 points 4 points 4 points An inflated balloon has a v olume equal to 2.3 L at 20˚C. When the tempe rature is reduced to 10˚C, the v olume... A small quantity of neon gas is held in a 150 mL container at 1.11 atm and 27 ˚C. How man y moles of gas are in this container? Catalytic co nverters reduce the amount of _____ in car e xhaust. The two most abundant gases in an inhaled breath are... The air we e xhale contains about 100 times more of which gas than the air we breathe from the atmosphere? Which pollutant is present as a solid particulate in air? Which of the following pollutants cannot be detected by odor? Refer to the graph of ele vation vs pressure found here . What is the appr oximate pressure (in kP a) at 4500 m altitude? The hi k e from Mt. E v erest basecamp st r aight to the summit is only about 13 miles. However , when you consider the need to gradually acclimate to intense increases in altitude, summiting Mt. E verest takes ov er a month and a half to complete. How does this mak e sense with our discussion about the atmosphere? A pitfall (or slight plot hole) of Dr . Man n's planet in the mo vie Interstellar was that it had an ammonia-rich atmosphere. A lethal concent r ation of ammonia (NH 3 ) is about 5,000 ppm or a mole fr action of only 0.005. Use Dalto n's Law to calculate the lethal partial pressure in atm of NH 3 if the ambient pressure of D r . Man n 's planet is 2.52 atm. Answer to 4 decimal places. One of the coolest science experiments ev er done is the Miller-Ur ey e xperiment, where the gases of the primordial earth were combined in a closed system to see if the building blocks of life (amino acids, RNA, etc.) could h av e been created b y natural forces several billions of y ears ago. These gases are H 2 O , CH 4 , NH 3 , and H 2 . What is the total pressure of a gas mixture containing 0.501 atm H 2 O , 0.211 atm CH 4 , 0.119 atm NH 3 and 0.0551 atm H 2 ? Assume no reaction occurs. A 34 L container holds 0.80 moles of gas at 300 K. What is the pressure (in atm)? A gas is e xpanded from 3.60 L and 76.8 k P a to 8.10 L at constant tempe r ature. What is the final pressure? doubles is halved decreases b y a small amount increases b y a small amount 8.87 x 10 -6 mol 7.51 x 10 -2 mol 6.76 x 10 -3 mol 4.50 mol 200. mol CO O 3 CO 2 N 2 Nitrogen and oxygen Nitrogen and water vapor Oxygen and carbon di oxide Carbon di oxide and nitrogen Carbon di oxide Argon Oxygen Nitrogen Soot Ozone Carbon mon oxide Sulfur dioxide CO O 3 NO x SO x 57 k Pa 50 k Pa 60 k Pa 63 kPa 45 kPa As you go up in ele vation, the trend in air pressure is inconsistent. The body needs to adjust to the inconsistency in air pressure. As you go up in ele vation, the air pressure decreases. When the a vailable oxygen decreases, the body needs time to adjust. As you go up in ele vation, the air pressure increases. When the a vailable oxygen increases, the body needs time to adjust. T ype your answer ... 0.886 atm 0.662 atm 1.000 atm 1.551 atm 1.382 atm 0.58 atm 20 atm 440 atm 1.2 atm 2240 k Pa 34.1 k Pa 173 k Pa 68.2 k Pa 9.48 k Pa 86.4 k Pa 12 13 14 15 16 17 18 19 20 21 22 23 24