The density of hydrogen gas at STP is 0.9 kg m^(-3) The mean kinetic energy of one gram molecule of hydrogen gas is approx
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0
Answer:
166.67
Explanation:
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Answer:formula for mean kinetic energy is equal to 3/2 RT.... For 1 mole
In the question it is given at STP so
T= 273 K
KE= 3/2 RT
= 1.5 ×8.314 × 273
=3404.583 J
It would be an approximate answer because density is not 1 kg/m^3
To get exact answer
Rms velocity=(√3P/density) where
P = pressure at stp= 1.013 × 10^5
Once you get rms velocity you can find kinetic energy using
KE = 1/2 m×( v rms) ^2
Where m = mass of hydrogen (in kg) = 2 × 10^-3 kg
So the exact answer would be 3403 Just
Explanation:
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