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guapka [62]
4 years ago
7

Why does a catalyst work for a long time before it needs replacing?

Chemistry
1 answer:
DedPeter [7]4 years ago
7 0
Because the catalyst is not really part of the reaction. it is something that speed up a reaction by lowering the energy need for the reaction to take place. however, in the end the catalyst is brought back to its initial state. that's why it is long lasting
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Compare homogeneous and heterogeneous mixtures?
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A homogeneous mixture has the same uniform appearance and composition throughout. Many homogeneous mixtures are commonly referred to as solutions. A heterogeneous mixture consists of visibly different substances.
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3 years ago
Scientific knowledge results from the interaction of scientists who are investigating natural phenomena. Which of these BEST des
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Read 2 more answers
Name all of the alkene isomers, c6h12, that contain a methylene group.
Romashka [77]

Actually, a methylene group is simply any compound which contains a C=C double bond group and the rest are single bonded carbon groups. Some example of the isomers of C6H12 which contains methylene group is:

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4 0
4 years ago
A neutralization reaction was carried out in a calorimeter. The change in temperature (∆T) of the solution was 10.9 °C and the m
BabaBlast [244]

Answer:

The correct answer is 4,556.2 J

Explanation:

The amount of heat is calculated with the following equation:

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ΔT= 10.9ºC (change in temperature)

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5 0
3 years ago
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