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THE MOLE: 6.022 x 10²³

Wtuii id a ‘Mole?

One mole is the amount of a substance that contains 6.022 x 10^Jł atoms or molecules. It is specifically defined as the number of atoms contained in 12 grams of carbon-12. This is also known as ’Avogadro's Number’ (N_A); it is named after the Italian scientist Amedeo Avogadro (lef t), a suggestion put forward by French scientist Jean Perrin to recognise Avogadro’s work.

'One mole id eddenlially-

602,214,179,000,000,000,000,000

-of domething - in chemidlry, atonii or moleculed

Waler    Iron    'Oxggen Tobie Salt    fyold    Helium

ONE MOLE IS A DIFFERENT MASS FOR 0IFFERENT ELEMENTS & C0MP0UNDS

This may seem confusing; however, it's similar to comparing a dozen elephants to a dozen mice. Although their masses may be very different, you still have a dozen of each!

Mt ^ Kt Kt ffil fct HSt l ust ftt ffil

V V V V V V V V V V V V

// mole id oflen referred to ad a chemidl d dozen ’

IT’S JUST AN EASIER WAY TO C0UNT LARGE NUMBERS 0F ATOMS 5 MOLECULES

NO. 0F M0LES = MASS (g) + MASS 0F1 MOLE (g)

®OCOUrOUNOlNUHST:OM WttW.COMPOUKOOlIMCOU ] TWlTTIfceCOUPOONOCMfM i fACtIIOOK COMKOUPOUNOCHl V *HAJKOWtX*AOIfATlVf COMUOSS ATTHlBUflOSNOttOMMl KlAl NOOf AfYATlYf S 4.0 INTf ANATłONAl llCCNCC

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