The mole fraction of N, gas in the air is 0.781 at 760 torr. Calculate the partial pressure of N, in air 2,

Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter13: Gases
Section: Chapter Questions
Problem 98A
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The mole fraction of N, gas in the air
is 0.781 at 760 torr. Calculate the
partial pressure of N, in air
Choose...
A balloon originally had a volume of
5.39 L at 317 K and a pressure of 755
mmHg. To what temperature ( in K)
must the balloon be cooled to reduce
its volume to 4.00 L at a pressure of
620 mmHg?
Choose...
Transcribed Image Text:The mole fraction of N, gas in the air is 0.781 at 760 torr. Calculate the partial pressure of N, in air Choose... A balloon originally had a volume of 5.39 L at 317 K and a pressure of 755 mmHg. To what temperature ( in K) must the balloon be cooled to reduce its volume to 4.00 L at a pressure of 620 mmHg? Choose...
Match each of the following with its correct answer
What is the molar heat of combustion
of methanol CH,OH ( in kJ/mol), if the
combustion of 1.0 g of methanol
causes a temperature rise of 3.68 °C
in a bomb calorimeter that has a heat
Choose...
capacity of 6.43 J/°C?
Consider the following
reactions:
+ 302 (g)
2 WO3
2W
(s,
AH= -1939.40
(s)
kJ/mol
2H2 (9)
+ O2 (9)
2H,0
+
AH= - 477.84
(g)
Choose...
kJ/mol
Use Hess's law to Calculate AH (in
kJ/mol) for the following reaction:
WO 3 (s)
+ ЗН.
2 (g)
W
(s)
+ 3H,
'2° (g)
Consider the following
thermochemical equation:
2NO,
O2(9)
2 NO 2(g)
+ 0
(g)
ÄH = -114.1 kJ
Choose...
If 3.00 x 10 g NO, were produced,
then the amount of heat released (in
kJ) would be:
Transcribed Image Text:Match each of the following with its correct answer What is the molar heat of combustion of methanol CH,OH ( in kJ/mol), if the combustion of 1.0 g of methanol causes a temperature rise of 3.68 °C in a bomb calorimeter that has a heat Choose... capacity of 6.43 J/°C? Consider the following reactions: + 302 (g) 2 WO3 2W (s, AH= -1939.40 (s) kJ/mol 2H2 (9) + O2 (9) 2H,0 + AH= - 477.84 (g) Choose... kJ/mol Use Hess's law to Calculate AH (in kJ/mol) for the following reaction: WO 3 (s) + ЗН. 2 (g) W (s) + 3H, '2° (g) Consider the following thermochemical equation: 2NO, O2(9) 2 NO 2(g) + 0 (g) ÄH = -114.1 kJ Choose... If 3.00 x 10 g NO, were produced, then the amount of heat released (in kJ) would be:
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