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Stoichiometry Problems

Stoichiometry Problems. If 304g of Eu (s) are used how many moles of hydrogen gas are produced? __ Eu (s) + __HF (g)  __EuF 3 (s) + __H 2 (g) Step 1: Balance the Equation!. __ Eu (s) + __HF (g)  __EuF 3 (s) + __H 2 (g) Eu 1 Eu 1 H 1 1 H 2 F 1 1 F 3.

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Stoichiometry Problems

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  1. Stoichiometry Problems

  2. If 304g of Eu (s) are used how many moles of hydrogen gas are produced? • __Eu (s) + __HF (g)  __EuF3 (s) + __H2 (g) • Step 1: Balance the Equation!

  3. __Eu (s) + __HF (g)  __EuF3 (s) + __H2 (g) Eu 1 Eu 1 H 1 1 H 2 F 1 1 F 3

  4. If 304g of Eu (s) are used how many moles of hydrogen gas are produced? • _2_Eu (s) + _6_HF (g)  _2_EuF3 (s) + _3_H2 (g) • Step 2 GFM of any formula listed in the question! • Eu (s)  GFM = 152g/mole • H2 (g)  GFM = 2g/mole

  5. If 304g of Eu (s) are used how many moles of hydrogen gas are produced? • _2_Eu (s) + _6_HF (g)  _2_EuF3 (s) + _3_H2 (g) Step 3 convert mass to moles • If 1 mole of Eu = 152g: • = • X = 2 mole of Eu (s)

  6. If 304g of Eu (s) are used how many moles of hydrogen gas are produced? • _2_Eu (s) + _6_HF (g)  _2_EuF3 (s) + _3_H2 (g) Step 4 determine the mole ratio • For every 2 moles of Eu (s) used 3 moles of H2 (g) are produced. = X = 3 moles of H2 (g)

  7. If 608g of Eu (s) are used how many grams of EuF3 (s) are produced? • _2_Eu (s) + _6_HF (g)  _2_EuF3 (s) + _3_H2 (g) • EuF3  GFM = 209g/mole • Eu  GFM = 152g/mole = x = 4moles of Eu

  8. If 608g of Eu (s) are used how many grams of EuF3 (s) are produced? • _2_Eu (s) + _6_HF (g)  _2_EuF3 (s) + _3_H2 (g) • Mole ratio: • If 4 moles of Eu are used then: = X = 4 moles of EuF3

  9. If 608g of Eu (s) are used how many grams of EuF3 (s) are produced? • _2_Eu (s) + _6_HF (g)  _2_EuF3 (s) + _3_H2 (g) • If 4 moles of EuF3 are produced then: = X = 836g of EuF3

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