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artcher [175]
2 years ago
8

25 POINT QUESTION! HELP ASAP! WILL GIVE BRAINLIEST TO CORRECT ANSWER!!

Chemistry
1 answer:
Mice21 [21]2 years ago
5 0

Answer:

D

Explanation:

A catalyst functions to speed up chemical reaction. It does this by lowering the activation energy required for the reaction to begin by providing an alternative pathway for the substrates to interact with each.

The pathway ABD involves a reaction that requires a higher activation energy as compared to reaction following the pathway ACD as seen in the diagram.

So it means that a catalyst must be mediating the reaction with the lower activation energy. -pathway ACD, and this reaction will proceed faster than the reaction following the pathway ABD.

Hence option D is the only valid and correct option.

<h3>Hope this helps!</h3>
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2 years ago
Observation: I am in the lab timing how long it takes to boil 100 mL of water in a beaker over a Bunsen burner. I observe it tak
77julia77 [94]

Answer:

The likely causes inferred about the differences in times observed are;

1) Slight increase of the vapor pressure of the air immediately above the water surface due to the presence of a lid

2) Variation of heat input due to wind draft that alters the focus of the flame

3) The introduction of impurities into the water from the water source or through the sourcing mediums or containers or during handling of the water

Explanation:

The factors that affect the boiling point of water includes;

1) The amount of heat supplied, to the water

2) Vapor pressure above the water surface

3) Presence of impurities in the water

Therefore, the most likely causes for the difference in the times observed for the water to boil in the order of increasing probability of cause and effect are therefore;

1) Slight increase of the vapor pressure of the air immediately above the water surface due to the presence of a lid

2) Variation of heat input due to wind draft that alters the focus of the flame

3) The introduction of impurities into the water from the water source or through the sourcing mediums or containers or during handling of the water.

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