Jiz ♥ > 07-26-2011, 10:38 AM
iostream > 11-16-2011, 02:09 PM
iostream > 11-16-2011, 02:12 PM
uhm1987 > 01-13-2012, 10:12 AM
Uyennie Lollipop > 01-14-2012, 09:35 AM
iostream Đã viết:bài 1:
d = (0.5 * 32 + 0.25 * 48)/(0.5 + 0.25)
bài 2:
%V = %n(% về số mol)
dựa vào dX/H2 = (28x+46y)/(x+y) = 30 -> x = 8y
%n(CO) = x/(x+y) = 8/9
%n(CO2) = y/(x+y) = 1/9
xrcoi > 08-03-2012, 07:21 AM
maithe2014 > 11-24-2014, 07:49 AM