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# Question Answer

In this lab, you dissolved CalCl2 in water and measured how the temperature changed. Below, perform each calculation based on your data and enter your answers with the correct number of sig figs.
1.

How many moles of CalCl2 were dissolved in this lab?

  mol
Answer must be rounded to correct number of sig figs!
2.

What was the heat change (∆H) that resulted from dissolving CaCl2 (in kilojoules, kJ)?

  kJ
Answer must be rounded to correct number of sig figs!
3.

How much heat was asborbed by the water from the dissolution of CaCl2 (in joules, J)? (cH2O = 4.18 J/g•°C)

  J
4.

Using the answer from Question #2 as your theoretical value and the answer from Question #3 as your actual value, calculate your percent error for this lab. Make sure you convert your heat values to the same unit first!

  %

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