estimation



a) Assuming the human body is made primarily of water, estimate the volume

of a human. Keep the approximation simple. Draw a diagram to justify this.

b)The density of water is 1 gram/cm3. What is this in SI units?

c) Using a/b) What is the approximate mass of a human in kg?

d) The mass of a water molecule is about 3 × 10−26 kg. Using a/b/c, about

how many water molecules are in a person? You just need to report to one sig

fig.