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slavikrds [6]
3 years ago
14

Which statement about limiting factors is false? A. Limiting factors are conditions that affect an organism's chance of survival

. B. Limiting factors only affect producers. C. Limiting factors differ from ecosystem to ecosystem. D. One example of a limiting factor is temperature.
Chemistry
2 answers:
olga55 [171]3 years ago
3 0

Limiting factor is a condition which affects population in adverse manner.

It decreases the population density

It can be of two types

a) population density dependent : it affects based on population density

b) population density independent: it affects all population upto same extent irrespective of density of population

So the false statement is : It only affects producers

Hunter-Best [27]3 years ago
3 0

The question is asking wich of these answer choices is rong youre answer is b cuz it dosent only affect producers it affects us to and other animals cuz if we stay a long time down water we need to go up and get more air so youre answer would be b

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Which step in the free-radical chlorination of methane do you expect to be the most exothermic? attempt this problem without loo
stiks02 [169]

The termination step of the free-radical chlorination of methane is the most stable one among all three steps.

The free-radical substitution reaction between chlorine and methane features three major steps:

Initiation, during which chlorine molecules undergo homolytic fission to produce chlorine free radicals. Ultraviolet radiations are typically applied to supply the energy required for breaking the chlorine-chlorine single bonds. The initiation step is thus <em>endothermic</em>.

Propagation, a process in which chlorine free radicals react with methane molecules and remove a hydrogen atom from the alkane to produce hydrogen chloride and an alkyl radical e.g., \cdot \text{CH}_3. The carbon-containing free radical would react with chlorine molecules to produce chloromethane and yet another chlorine free radical. This process can well repeat itself to chlorinate a significant number of methane molecules.

Termination. Free radicals combine to produce molecules. For example, two chlorine free radicals would combine to produce a chlorine molecule, whereas two alkyl free radicals would combine to produce an alkane with two-carbon atoms in its backbone.

Chemical processes that increase the stability of a substance reduces its chemical potential energy. Energy conserves, thus such processes would also release energy equal to the potential energy lost in quantity. Free radicals are unstable and- as seen in the propagation step- compete readily with neutral molecules for their electrons. The propagation step keeps the number of free radicals constant and is therefore more exothermic than the initiation step. The termination step reduces the number of free radicals, increase the stability of the system by the greatest extent, and is therefore the most exothermic step among the three.

3 0
3 years ago
matter that is composed of two or more different elements chemically combined in a fixed proportion is classified as
Helga [31]

Answer: The answer for this is Compound.

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Elements are defined as the smallest substances which cannot be broken down into another substance by any chemical means.

A compound is a defined as a substance composed of two or more different elements when they combine chemically in definite proportion. For example: CO_2 is named as carbon dioxide and is a compound made by combining carbon and oxygen in a fixed ratio of 1 : 2

So, the answer to the given question is compound.

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