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OpenStudy (anonymous):
How many helium atoms are there in a helium blimp containing 539kg of helium?
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OpenStudy (wolfe8):
Refer to this http://erhs.rcsnc.org/UserFiles/Servers/Server_4766394/Image/Donna%20Scofield/mole%20conversion%20map.bmp You are going from mass to number of particles.
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