1) What color was the malachite before heating? 2

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1) What color was the malachite before heating?

2.  What color was the malachite after heating?

 

 

3. How many grams of malachite did you add to the crucible?

 

 

4. How many grams of product were in the crucible after heating? Choose the closest answer.

 

 

5. By how much did the mass of the crucible's contents change after heating? Choose the closest answer.

 

 

6. The molar mass of malachite is 221.1 g/mol. How many moles of malachite were present before the reaction? Choose the closest answer.

 

 

7. The product remaining in the crucible after heating is copper(II) oxide. The molar mass of copper(II) oxide is 79.55 g/mol. How many moles of copper(II) oxide were produced during the reaction? Choose the closest answer.

 

 

8. Which of the following represents the balanced chemical equation for this reaction?

 

 

9. Based on the number of moles of malachite that you started with, how many grams of water were produced? The molar mass of water is 18.0153 g/mol. Choose the closest answer.

 

 

10. Based on the number of moles of malachite that you started with, how many moles of CO2 were produced? Choose the closest answer.

 

 

11. Based on the number of moles of malachite that you started with, how many grams of CO2 were produced? The molar mass of CO2 is 44.01 g/mol. Choose the closest answer.

 

 

12. Based on the number of grams of CO2 and H2O produced during the reaction, does this compensate for the observed loss of mass?

 

 

13. You observed that the products in the crucible weigh less than the reactants that you added. How is this possible?

 

 

14. What kind of a reaction took place upon heating?

 

 

15. Baking soda is used as a leavening agent in baking. When heated, baking soda undergoes a decomposition reaction to form carbon dioxide. Given the data in the table below, which of the following reactions occurs during baking? The molar mass of baking soda is 84.007 g/mol and the molar mass of carbon dioxide is 44.01 g/mol.