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Diamantul Orlov contine 19,38•10la puterea 23 atomi de carbon.Calculeaza masa acestui diamant si expri-mo in carate (1 carat 0,2 g)
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Răspuns :

1mol C........12g............6,023*10²³ atomi de C ................mdiamant....19,38*10²³ atomi de C
mdiamant=19,38*12/6,023=38,61g
carate=mdiamant/0,2=38,61/0,2=193 carate