A 15-cm-diameter cylinder of heliumgas is 20 cm long and at
A 15-cm-diameter cylinder of heliumgas is 20 cm long and at 20°C. Thepressure gauge reads 120 psi.
(a) How many helium atoms are in thecylinder?
(b) What is the mass of the helium?
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a 15-cm-diameter cylinder of heliumgas is 20 cm long and at 20degc thepressure gauge reads 120 psia how many helium
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