Question

9. Calculate the approximate number of atoms in a bacterium. Assume the average mass of an atom in the bacterium is 10 times the mass of a proton.

Answer 1

The question is incomplete, the complete question is :

Calculate the approximate number of atoms in a bacterium. Assume the average mass of an atom in the bacterium is 10 times the mass of a hydrogen atom.(Hint the mass of hydrogen atom is on order of $10^{-27}$ kg and the mass of bacterium is on order of $10^{-15}$ kg

Answer:

The total numbers of atom in bacterium are $10^{12}$.

Explanation:

Mass of hydrogen atom, m= $10^{-27}$ kg

Mass of bacterium , M= $10^{-15}$ kg

Mass of bacterium atom =m'

Given ; $m' =10\times m$

$m'=10\times 10^{-27} kg=10^{-26} kg$

let the number of atoms in bacterium be N

$m'\times N=M$

$N=\frac{M}{m'}=\frac{10^{-15} kg}{10^{-27} kg}=10^{12}$

The total numbers of atom in bacterium are $10^{12}$.