Comentários sobre: Formula para calcular massa em gramas http://www.professoronline.net/formula-para-calcular-massa-em-gramas/ Tue, 09 Nov 2021 23:24:03 +0000 hourly 1 https://wordpress.org/?v=4.1.41 Por: Eng. Luiz http://www.professoronline.net/formula-para-calcular-massa-em-gramas/comment-page-1/#comment-690 Fri, 21 Dec 2012 17:18:35 +0000 #comment-690 Massa molecular:
NO = 14 + 16 = 30 g
CO = 12 + 16 = 28 g
He = 4 g

30 g/mol —— 6,0 . 10²³ mol-¹
x(NO)———- 2,0 . 10²³
x(NO)= (2 .30)/6 = 10 g

1 mol —– 28 g/mol
15 mols —- y(CO)
y(CO) = (15 . 28)/1 = 420 g

1 mol —– 4 g/mol
0,5 mol — z(He)
z(He) = (0,5 . 4)/1 = 2 g

M(mistura) = 10 + 420 + 2 = 432 g

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