Which of the following statements is true about catalysts? and Why?

2 answers:

8 0

I believe the correct answer from the choices listed above is option D. Catalysts lower the activation energy of a chemical reaction. It <span>is a substance which speeds up a reaction, but is chemically unchanged at the end of the reaction. It provides another pathway for the reaction to occur.</span>

Strike441 [17]3 years ago

4 0

Your answer will be C. It's not D i just took the test

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How long must you immerse equipmemt and utensils in a non-chlorine sanitizing solution

Ivan

A non-chlorine chemical such as iodine may be used as a sanitizing solution. To use iodine as a sanitizing solution, it should be around 12.5-25 ppm in water that is at least 75° F. Utensils and equipment must be immersed for only 30 seconds because it may lose its effectivity if the pH level gets too high due to high temperature. Discoloration may also result if the utensils and equipment are in prolonged contact with the solution.

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3 years ago

Two samples of potassium iodide are decomposed into their constituent elements. The first sample produced 13.0 g of potassium an

Cerrena [4.2K]

Answer:

79.4 kg

Explanation:

The formula for potassium iodide is:-

$KI$

This means that they are present in the same mole ration, i.e. 1 : 1

Also for 2 samples, the ratio of the masses must be equal .

So,

$\frac{Mass\ of\ potassium\ in\ sample\ 1}{Mass\ of\ Iodine\ in\ sample\ 1}=\frac{Mass\ of\ potassium\ in\ sample\ 2}{Mass\ of\ Iodine\ in\ sample\ 2}$