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kogti [31]
3 years ago
13

A possible reaction for the degradation of the pesticide DDT to a less harmful compound was simulated in the laboratory. The rea

ction was found to be first-order, with at . What is the half-life for the degradation of DDT in this experiment, in years?
Biology
1 answer:
Bas_tet [7]3 years ago
8 0

Answer:

This exercise is incomplete, missing the value of k (decay constant), which is equal to 4x10⁻⁸s⁻¹ at 25°C

The answer is 0.549 years

Explanation:

Given:

first order of reaction

k = 4x10⁻⁸s⁻¹

For a first order of reaction, the half-life time for the degradation of DDT is equal to:

t=\frac{0.693}{k} =\frac{0.693}{4x10^{-8} } =17325000s=0.549years

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One way to tell that an explanation is pseudoscientific rather than scientific is to
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One way to tell that an explanation is pseudoscientific rather than scientific is to look at how readily proponents of the explanation will accept evidence to the contrary.

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Pseudoscience includes beliefs, theories, or practices that have been or are considered scientific, but have no basis in scientific fact. Pseudosciences are claimed to be both scientific and factual, but are incompatible with the scientific method.

Pseudoscience Examples

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Some differences between pseudoscientific than scientific are:

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pseudoscientific : Personal stories or testimonials are relied upon for evidence.

scientific: Consistent and interconnected; one part cannot be changed without affecting the whole.

pseudoscientific : Inconsistent and not interconnected; any part can be arbitrarily changed in any way without affecting other parts.

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pseudoscientific : Argues from ignorance. The lack of a scientific explanation is used to support ideas.

scientific: Uses vocabulary that is well defined and is in wide usage by co-workers.

pseudoscientific : Uses specially invented terms that are vague and applied only to one specific area.

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<h3>Answer details</h3>

Grade:  9

Subject:  biology

Chapter:  Introduction to Psychology

Keywords:  scientific,  pseudoscientific, evidence, contrary, Introduction to Psychology

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