taybeene7 taybeene7

22-09-2016
Chemistry

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5.40 g B determine the number of atoms

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Willchemistry Willchemistry

27-09-2016

Atomic mass Boron ( B ) = 10.811 u.m.a

10.811 g -------------- 6.02x10²³ atoms
5.40 g ----------------- ?? atoms

5.40 x ( 6.02x10²³) / 10.811 =

3.0069x10²³ atoms

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