Posted by Mack on Saturday, April 19, 2008 at 9:10am.
runner's mass = 560N/g = 560/9.8 kg
weight of water =(560/9.8)*74% kg
=(560/9.8)*.74*1000 g
atomic mass of hydrogen=1g/mol
atomic mass of oxygen=16g/mol, so
atomic mass of water=2x1+16=18g/mol
moles water=(560/9.8)*.74/18
molecules=[moles water]*6x10^23
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