C) The aop D) In collisions with the walls of the container or with other molelu
ID: 635579 • Letter: C
Question
C) The aop D) In collisions with the walls of the container or with other molelules, cng E) none of the above 22. Which represents the largest pressure? C) 14.7 lbs/in2 A) 101 kPa B) 1.1 atm D) 760 mmHg E) none of the above The number of mmHg in one atmosphere is C)1.00 . D) 101.325 E) none of the above A) 14.7 B)760 I' the volume of a 1.75 liter sample of gas at 40.0°C changes to 1.57 liters under constant pressure, what must be the new temperaturer A)-273°C B 7.79°C C)-1.18°C D)35.8°C E) none of the above y many grams of Clh are contained in a 25.0 L sample at 5.20 atm and 28.0°C? A) 1810 g B) 168 g C) 84.2g D) 5.26 g E) none of the above 26. The conc water is 0.78 centration of nitrogen in water is 4.89 x 10 M when the partial pressure of nitrogen above the aimmor)140 x 10-? 584 aan, D) 0.001 71-E) none ofthe above atm What will be the concentration if the partial pressure increases to 2.74 atm? A) 7160 27. What is the tota I pressure of a mixture of He and H2 if the partial pressures are 320 mmHg and 800 mmHg respectively? 28. The amount of energy involved in boiling a substance without changing its temperature is 29. Water has a lower boiling point at high altitude than it does at sea level because at high altitude A) 40 mmHg B)60 mmHg C)320 mmHg D) 480 mmHg Bnone of the above called the E) none of the above ) heat of vaporization. B) calorie. C) heat of combustion D) heat of fusion. B) the atmospheric pressure is less. A) the atmospheric pressure is greater. C) the vapor pressure of water is less D) the vapor pressure of water is greater. E) none of the abovExplanation / Answer
22) B 1.1 atm
1 ATM = 101 atm=760mm Hg=14.7 lbs/in2
23)B 760 mm Hg
24)D34.8
V1/T1=V2/T2
1.75/40=1.57/x
X= 35.8 oC
25 E none of the above
PV=nRT
5.20* 25.0=n *0.082* 301 (273+28kelvin)
n=5.26 moles
n= weight/ 70.90(molecular weight )
5.26*70.90=weight
Weight =372.93g
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