Question

A red blood cell has a mass of about 0.000000000027 g. Convert this mass to an appropriate SI prefix and unit, so the number portion does not need a decimal place (i.e. an integer number). Your answer must include the number and the appropriate unit symbol.
isn't it 27picograms?

Answer 1

SI unit for mass is Kg (kilogram)

1 Kg= 1000 g

Let us convert 0.000000000027 g into kg

$0.000000000027 g=27\times10^{-12} g$ $=27\times10^{-12}\times10^{-3}kg=27\times10^{-15}kg$