GoryStmesay
GoryStmesay
14-10-2016
Chemistry
contestada
How many atoms are in 165 g of calcium?
Respuesta :
Willchemistry
Willchemistry
23-10-2016
Atomic mass calcium ( Ca ) = 40.078 a.m.u
40.078 g ------------- 6.02x10²³ atoms
165 g ----------------- ??
165 x ( 6.02x10²³ ) / 40.078
=>
2.47x10²⁴ atoms
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