How many atoms are in 187 g of Calcium?

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asked May 11, 2017 71.0k views

1 Answer

Tim Windsor Brown · Answer 1 · 2017-05-15T13:23:17+0000

Atomic mass Calcium ( Ca) = 40.078 u.m.a

40.078 g --------------- 6.02x10²³ atoms
187 g ------------------- ??

187 x ( 6.02x10²³) / 40.078 =

1.125x10²⁶ / 40.078 = 2.808x10²⁴ atoms

hope this helps!

How many atoms are in 187 g of Calcium?

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