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Consulte Graatis
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IsisFerreira's Profile
Star Rating: [2 
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Member Since: Mar 04, 2013
Total # Questions Provided: 1
Total # Answers Provided: 0
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Member Since: Mar 04, 2013
Total # Questions Provided: 1
Total # Answers Provided: 0
mar
4
2013
A massa atômica média do gálio
A massa atômica média do gálio é 63,723 u.Sabendo-se que naturalmente esse elemento consiste da mistura dos isótopos Ga(69) e Ga(71) de massas 68,9257 u e 70,9249 u,respectivamente,calcule as porcentagens...
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