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Anna35 [415]
3 years ago
11

Which of the following statements is true about the food chain below? Grass ⇒ grasshopper ⇒ bird ⇒ hawk The amount of energy tra

nsferred from the grass to the grasshopper is ____. the amount of energy transferred from the grasshopper to the bird.
A)More than
B)Less than
C)The same as
Chemistry
2 answers:
lorasvet [3.4K]3 years ago
8 0

In a food chain we arrange the energy in the form of a pyramid.

The producers are on the base of pyramid and then consumers are towards peak.

in the given food chain grass is being eaten by grasshopper which are food of birds.

Grasshoppers are also eaten up by Hawks. so both brids and hawks are feeding upon grasshoppers thus the amount of energy transferred from the grass to the grasshopper is the same as the amount of energy transferred from the grasshopper to the bird.

Taya2010 [7]3 years ago
8 0

Answer: Option (C) is the correct answer.

Explanation:

In the given case, the amount of energy transferred from the grass to the grasshopper is more, because in each stage of the food chain, some energy is lost in the form of heat. The transfer of energy becomes more inefficient the more you climb up in the food chain.

Thus, we can conclude that the amount of energy transferred from the grass to the grasshopper is more than the amount of energy transferred from the grasshopper to the bird.

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Data;

  • Time = 43 minutes
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<h3>Reaction Constant</h3>

Let the initial concentration of the reaction be X_0

The reactant left = (1 - 0.45) X_0 = 0.55 X_0 = X

For a first order reaction

\ln(\frac{x}{x_o}) = -kt\\ k = \frac{1}{t}\ln (\frac{x_o}{x}) \\ k = \frac{1}{43}\ln (\frac{x_o}{0.55_o})\\ k = 0.013903 min^-^1

<h3>Half Life </h3>

The half-life of a reaction is said to be the time required for the initial amount of the reactant to reach half it's original size.

x = \frac{x_o}{2} \\t = t_\frac{1}{2} \\t_\frac{1}{2} = \frac{1}{k}\ln(\frac{x_o}{x_o/2})\\

Substitute the values

t_\frac{1}{2} = \frac{1}{k}\ln(2)=\frac{0.6931}{0.013903}\\t_\frac{1}{2}= 49.85 min = 50 min

The half-life of the reaction is 50 minutes

Learn more on half-life of a first order reaction here;

brainly.com/question/14936355

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