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3 years ago

7

Food web diagrams the interactions between organisms based on which organisms others are eating. A scientist is using a food web

to predict the predator-prey relationship of a population. What can a food web best be classified as?
A. a mean
B. a graph
C. a model
D. a range

1 answer:

Alexxandr [17]3 years ago

7 0

Answer:

model

Explanation:

edge 2020

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The combustion of ethene in the presence of excess oxygen yields carbon dioxide and water: c2h4 (g) + 3o2 (g) → 2co2 (g) + 2h2o

meriva

Answer:

$\boxed{-267.5}$

Explanation:

You can calculate the entropy change of a reaction by using the standard molar entropies of reactants and products.

The formula is

$\Delta_{r} S^{\circ} = \sum_n {nS_{\text{products}}^{\circ} - \sum_{m} {mS_{\text{reactants}}^{\circ}}}$

The equation for the reaction is

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ΔS°/J·K⁻¹mol⁻¹ 219.5 205.0 213.6 69.9

$\Delta_{r} S^{\circ} = (2\times213.6 + 2\times69.9) - (1\times219.5 + 3\times205.0)\\\\= 567.0 - 834.5 = \boxed{-267.5 \text{ J}\cdot\text{K}^{-1} \text{mol}^{-1}}$

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3 years ago

Give 10 examples of potential energy converted into kinetic energy

Viktor [21]

Answer:

Book on Table

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Exothermic Chemical Reaction

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Wind Turbine

Explanation:

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Explanation:

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As a result, when can is warmed up then atoms of solid aluminium can will start to vibrate more because heat will decrease the force of attraction between the molecules.

Thus, atoms will start to move away from each other and hence, they will vibrate more.

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