Project #1052 - Chemistry hydrates

Mass of empty pipet

2.84 grams

Mass of hydrate and pipet

3.27 grams

Mass after 1st heating

3.11 grams

Mass after 2nd heating

3.10 grams

 

 Show all your work.

  1. Using the data, calculate the mass of the water driven off.
  2. Using your answer to number 1, calculate the number of moles of water driven off.
  3. Using the data, calculate the mass of the “anhydrous” salt.
  4. Using your answer to number 3 and the fact that your “anhydrous” salt is copper (II) sulfate, calculate the number of moles of “anhydrous” salt.
  5. Using your answers to numbers 2 and 4, determine the formula of the hydrate.
  6. A hydrate is a crystal with _____________ molecules adhering to the ions or molecules.
  7. Define “anhydrous”
  8. Write the formula for hydrated zinc sulfate with 7 molecules of water adhering to each formula unit of zinc sulfate.

Subject Science
Due By (Pacific Time) 10/26/2012 06:00 pm
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