Chem 171 F10 Q4 Emp NIE Key

Chem 171 F10 Q4 Emp NIE Key - Chem 171 Quiz 4 Version A...

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Chem 171 Quiz 4 Version A (Key Emp NIE) 1. Determine the empirical formula of each of the following compound: 0.063 mol of chlorine atoms combined with 0.22 mol of oxygen atoms. Cl = 35.45. O = 16.00. 0.063 mol Cl 0.063 mol Cl ⎛⎞ ⎜⎟ ⎝⎠ = 1 0.22 mol O 0.063 mol Cl = 3.5 The formula is Cl 1 O 3.5 Whole numbers (x 2) is Cl 2 O 7 2. The following questions refer to the lab entitled “ NET IONIC EQUATIONS”. Write the formulas for the following: Ammonium ion, Mercury (I) ion, Peroxide ion, Bicarbonate ion, Nitrite ion. Ammonium ion, NH 4 + Mercury (I) ion, Hg 2 2+ Peroxide ion, O 2 2- Bicarbonate ion, HCO 3 - Nitrite ion, NO 2 - Chem 171 Quiz 4 Version B 1. Determine the empirical formula of each of the following compound: 2.45 g of silicon combined with 12.4 g of chlorine. Si = 28.09. Cl = 35.45. () 1molSi 2.45 g Si 28.09 g Si = 0.08722 mol Si 1molCl 12.4 g Cl 35.45 g Cl = 0.349788 mol Cl 0.08722 mol Si 0.08722 mol Si = 1 0.349788 mol Cl 0.08722 mol Si = 4 The empirical formula is SiCl 4 . 2. The following questions refer to the lab entitled “ NET IONIC EQUATIONS”.
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Chem 171 F10 Q4 Emp NIE Key - Chem 171 Quiz 4 Version A...

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