2013- 10- 5
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#9
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أكـاديـمـي فـعّـال
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رد: واجب الكيمياء ؟؟؟
..السلام عليكم ورحمه الله وبركاته.
اي بنات ساعدوناا بالواجب..
وهذا هو
Practice 1.
•A compound contains C, H, N. Combustion of 35.0mg of the compound produces 33.5mg CO2 and 41.1mg H2O. What is the empirical formula of the compound?
Practice 2.
•Caffeine contains 49.48% C, 5.15% H, 28.87% N and 16.49% O by mass and has a molar mass of 194.2 g/mol. Determine the molecular formula.
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