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BarbaraGomess
@BarbaraGomess
December 2019
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Calcule a massa molar de Ca(NO3)2
Alguém me explica por favor!!
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Verified answer
40,078 + 2x14,0067 + 6x15,9994
40,078 + 28,0134 + 95,9964
M = 164,0878g/mol
4 votes
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tatacristinasantana
Nós achamos a massa molar de acordo com a massa de um atomo e sua quantidade na molécula,então:
Cag40massa×1atomo=40u
N2-14massa×2atomos=28u
O6-16 massa×atomos=96u
Agora somamos as unidades de massa atomica
Ca+N+O=40+28+96=164u
3 votes
Thanks 3
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Lista de comentários
Verified answer
40,078 + 2x14,0067 + 6x15,999440,078 + 28,0134 + 95,9964
M = 164,0878g/mol
Cag40massa×1atomo=40u
N2-14massa×2atomos=28u
O6-16 massa×atomos=96u
Agora somamos as unidades de massa atomica
Ca+N+O=40+28+96=164u