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Annette [7]
3 years ago
7

You give a sample containing .90 moles of a substance

Chemistry
1 answer:
vampirchik [111]3 years ago
3 0
1 mole Cu ------------------ 6.02x10²³ atoms
0.90 moles Cu ------------ ??

0.90 x ( 6.02x10²³ ) / 1 =

= 5.41x10²³ atoms


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elements   :                        carbon     hydrogen    oxygen       Fluorine

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M r                                          12             1                16                19

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Empirical formula : C2H3OF3


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