How many mole have in 9.03×1000000000000000000000000 atoms Na

A mole present in 9.3      atoms Na is 15.44 mol Na.

Explanation:

A mole of a substance or a mole of particles is defined as exactly 6.02214076×10²³ particles, which may be atoms, molecules, ions, or electrons.

One mole of any element contains  6.022    atoms  of that element.

In order to determine how many moles are in a given number of atoms, divide the given number of atoms by  6.022   atoms /  1  mol .

                  = ( 9.3      atoms Na    1 mol Na) /  6.022   atoms Na

                  = 15.44 mol Na.

the answer to your question is c.

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