Question

Please someone I need help with chemistry ! If you can’t do them all that is fine please just do what you can and help . Please !

11. 2H202 (1) - 2H20 (1) + 02(g)
Drake asked Theo why the decomposition of hydrogen peroxide, H202, loses mass, especially when there are more molecules on the product side. Theo explains that it is because they decomposed the product. He says that decomposing the product destroys the original substance. To further prove his point, he explains that in nature, decomposition occurs when dead organic matter is destroyed by fungi: without this, the world would be littered with dead things. What, if anything, is wrong with this conversation of what happened in the reaction? Justify your answer.




13. Lab Analysis: You forgot to label your chemicals and do not know whether your unknown solution is strontium nitrate or magnesium nitrate. You use the solutions potassium carbonate and potassium sulfate in order to determine your mistake. unknown + potassium carbonate & unknown + potassium sulfate . What do you observe when the unknown solution is mixed with potassium sulfate? (Can you see the shape underneath?)

14. Lab Analysis: You forgot to label your chemicals and do not know whether your unknown solution is strontium nitrate or magnesium nitrate. You use the solutions potassium carbonate and potassium sulfate in order to determine your mistake. unknown + potassium carbonate & unknown + potassium sulfate . Write the complete balanced molecular equation(s) below of the reaction(s) that occurred, including the states of matter. HINT: Try writing ALL possible reactions that could have been created, and then decide which reactions actually occurred.

15. Lab Analysis: You forgot to label your chemicals and do not know whether your unknown solution is strontium nitrate or magnesium nitrate. You use the solutions potassium carbonate and potassium sulfate in order to determine your mistake unknown + potassium carbonate & unknown + potassium sulfate . From your observations, what is your unknown solution? A - magnesium nitrate or B - strontium nitrate

16. Lab Analysis: You forgot to label your chemicals and do not know whether your unknown solution is strontium nitrate or magnesium nitrate. You use the solutions potassium carbonate and potassium sulfate in order to determine your mistake. unknown + potassium carbonate & unknown + potassium sulfate . Justify your unknown solution in complete sentences, using your observations and the solubility rules as evidence in your explanation.

Answer 1

Step-by-step explanation:

Theo's explanation of the reaction is incorrect. The loss of mass in the decomposition of hydrogen peroxide is due to the release of oxygen gas, not the destruction of the original substance. Additionally, his analogy to the decomposition of organic matter by fungi is not directly related to this chemical reaction and could be misleading.

When the unknown solution is mixed with potassium sulfate, no visible change occurs in the solution. It is not possible to see any shape underneath.

The possible balanced molecular equations for the reactions are:

Unknown + potassium carbonate → potassium nitrate + unknown carbonate (solid)

Unknown + potassium sulfate → potassium nitrate + unknown sulfate (solid)

Both reactions form potassium nitrate as a product. The unknown compound could be either strontium nitrate or magnesium nitrate.

From the observations, it is not possible to determine the identity of the unknown solution. Both reactions result in the formation of potassium nitrate as a product, which does not provide any clues about the identity of the unknown.

Based on the solubility rules, we can determine the identity of the unknown solution. If the unknown compound is magnesium nitrate, the reaction with potassium carbonate would form solid magnesium carbonate, which is insoluble in water. However, if the unknown compound is strontium nitrate, the reaction with potassium carbonate would form solid strontium carbonate, which is soluble in water. The reaction with potassium sulfate would form solid strontium sulfate if the unknown compound is strontium nitrate, while solid magnesium sulfate would form if the unknown compound is magnesium nitrate. Therefore, if a solid precipitate forms when the unknown solution is mixed with potassium carbonate, the unknown compound is magnesium nitrate. Otherwise, if a solid precipitate forms when the unknown solution is mixed with potassium sulfate, the unknown compound is strontium nitrate.