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Chem1310_Exam1_practice-1

Chem1310_Exam1_practice-1 - Chem 1310 Exam 1 Name Lab...

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Chem 1310; Exam 1 Name: _________________________________________ Lab Section: 1. When 3.0 L of hydrogen gas (H 2 ) reacts with 2.0 L of nitrogen gas (N 2 ), 2.0 L of gaseous product are formed. All volumes of gases are measured at the same temperature and pressure. What is the formula of the product? A) N 2 H 6 B) NH 3 C) NH 4 D) NH E) N 2 H 3 2. Which of the following is not the correct chemical formula for the compound named? 3. For one element, 90.51% is an isotope with mass 19.992 amu, 0.270% is an isotope with mass 20.994 amu, and 9.22% is an isotope with mass 21.990 amu. Calculate the average atomic mass and identify the element. 4. Ferrocene has the formula Fe(C 5 H 5 ) 2 . The number of moles of ferrocene in 100.0 g of f errocene is Page 1
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Name: _________________________________________
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