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Category > Physics Posted 20 Apr 2017 My Price 10.00

The molecular mass of helium

001 (part 1 of 3) 10.0 points
The molecular mass of helium is 4 g/mol, the Boltzmann’s constant is 1.38066 X
10‘23 J /K, the universal gas constant is
8.31451 J/K - mol, and Avogadro’s number
is 6.02214 >< 1023 1/m61. Given: 1 atm = 101300 Pa.
How many atom of helium gas are required to fill a balloon to diameter 33 cm at 52°C and
1.323 atm? 002 (part 2 of 3) 10.0 points
What is the average kinetic energy of each helium atom?
Answer in units of J. 003 (part 3 of 3) 10.0 points
What is the rms speed of each helium atom?
Answer in units of m/s. 004 10.0 points
What is the average kinetic energy of a
molecule of oxygen at 342 K? Boltzmann’s constant is 1.38066 x 10-23 J/K.
Answer in units of J. 005 10.0 points
William bm'ns 1.5 g of peanuts beneath 1000 g
of water, which increases in temperature from
24°C to 46°C.
Assuming 45% efficiency, what is the food
value of the peanut?
Answer in units of cal.

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SuperTutor
(15)
Status NEW Posted 20 Apr 2017 05:04 AM My Price 10.00

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