5.40 g B determine the number of atoms

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asked Aug 14, 2017 172k views

1 Answer

Chaniqua · Answer 1 · 2017-08-20T23:16:48+0000

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

5.40 g B determine the number of atoms

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