- #1
Alice7979
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Homework Statement
A runner weighs 687 N and 71% of this weight is water. (a) How many moles of water are in the runner's body? (b) How many water molecules (H2O) are there?
Homework Equations
n = N/NA
n= m/mass per mole
NA = 6.022E23
F=ma
H: 2*1
O: 16
The Attempt at a Solution
a)
687/9.8=70.1 g
70.1 * .71 = 49.77 g of h20
49.77/18 u = 2.765
b) 6.022E23 * 2.765 = 1.665