How many atoms of silicon are in 1.8mol of silicon?

10.836 × 10∧23 atoms

Explanation:

The mole is the unit of amount in chemistry. We know that

1 mole of silicon = 6.02× 10∧23 atoms

The number 6.02× 10∧23 is called Avogadro's number.

Definition:

" Avogadro's number is the number of molecules atoms or ions in one gram molecule of a compound, one gram atom of an element or one gram ions of a substance"

For example:

1 g of hydrogen = 1 mole of hydrogen = 6.02× 10∧23 atoms of hydrogen

18 g of water= 1 mole of water= 6.02× 10∧23 molecules of water

Given data:

moles of sulfur= 1.8 mol

number of atoms= ?

Solution:

one mole of silicon=  6.02 × 10∧23

1.8 × 6.02× 10∧23 = 10.836 × 10∧23 atoms

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