If 11,243 atoms of helium pass through a 3 square meter plate area every 1.2 hours, and if this flux is constant with time, compute the flux of helium in units of atoms per m2 per second. Answer Format: X. XX Unit: 1 / (m2 s)

Question

Laurel Valenzuela

Chemistry

5 May, 16:41

If 11,243 atoms of helium pass through a 3 square meter plate area every 1.2 hours, and if this flux is constant with time, compute the flux of helium in units of atoms per m2 per second. Answer Format: X. XX Unit: 1 / (m2 s)

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Answers (1)

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Tessa Bolton · Answer 1

0.87 atom/m^2. s

Explanation:

Flux of helium = number of atoms of helium/area*time

Number of atoms of helium = 11,243

Area = 3 m^2

Time = 1.2 hours = 1.2*3600 = 4,320 s

Flux of helium = 11,243/3*4,320 = 11,243/12,960 = 0.87 atom/m^2. s