Question

Calculate the approximate number of atoms in a bacterium, assuming the average mass of an atom is ten times the mass of a hydrogen atom. The mass of a bacterium is 10−15 kg and the mass of a hydrogen atom is of the order of 10−27 kg.
atoms

Answer 1

10¹¹ is the approximate number of atoms in a bacterium.

What do you understand by mass of element?

The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu).

Given,

Mass of a bacterium atom = 10⁻¹⁵ kg.

Mass of a hydrogen atom  = 10⁻²⁷ kg.

From the above observation ,

The average mass of an atom of the bacterium is ten times the mass of a hydrogen atom.

Atomic mass 1 bacterium atom = 10 x mass of hydrogen atom

                                                  = 10 x 10⁻²⁷ kg.

                                                  = 10⁻²⁶ kg.

Thus,

The number of atoms in a bacterium

=  $\frac{Total mass}{Atomicmass of 1 bacterium}$

= $\frac{10^{-15} }{10^{-26} }$

=  $10^{11}$

The approximate number of atoms in a bacterium  is $10^{11}$.

Learn more about bacterium here:

brainly.com/question/12958132

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