What is the atomic mass of an element if 4.00 grams of it contains 2.98x1022 atoms ?

Atomic mass of the element = 80.80 amu

Explanation:

Given:

Mass of element = 4.00 g

No. of atoms =

Avogadro's no. = tex]6.02\times 10^{23}[/tex]

=

Formula for moles in the terms of mass and atomic mass

Atomic mass of the element =

Atomic mass of the element = 80.80 amu

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

i just learnt this recently but i need to look through my notes again