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Pavlova-9 [17]
3 years ago
12

When you go down the food chain by asking the question “what does it eat” at what Category of living things do you always end up

Chemistry
2 answers:
tino4ka555 [31]3 years ago
8 0
Almost always - herbivore. There are some exceptions - e.g sundew
Kisachek [45]3 years ago
3 0

Answer:

The correct answer will be- autotrophs or plants.

Explanation:

The food chain represents the flow of energy and matter between organisms. The food chain begins with autotrophs or plants which can synthesize the food on their own. These plants are eaten by the herbivores which get eaten by the carnivores.

When these are arranged in the categories then the autotrophs is positioned at the bottom of the pyramid whereas the top carnivore at the top.

If we will go down the category of the food chain then autotrophs will come at the bottom and thus autotrophs or plants is the correct answer.

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A device that generates an electrical current by taking advantage of a difference in the spontaneous tendency of substances to l
frutty [35]

Answer:

A. Electrochemical Cell

Explanation:

5 0
3 years ago
Sodium carbonate can be made by heating sodium bicarbonate: 2NaHCO3(s) → Na2CO3(s) + CO2(g) + H2O(g) At 25°C, for this reaction,
insens350 [35]

Answer:

401.17 K is the minimum temperature at which the reaction will become spontaneous under standard state conditions.

Explanation:

The expression for the standard change in free energy is:

\Delta G=\Delta H-T\times \Delta S

Where,  

\Delta G is the change in the Gibbs free energy.

T is the absolute temperature. (T in kelvins)

\Delta H is the enthalpy change of the reaction.

\Delta S is the change in entropy.

Given at:-

Temperature = 25.0 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T₁ = (25.0 + 273.15) K = 298.15 K

\Delta H = 128.9 kJ/mol

\Delta G = 33.1 kJ/mol

Applying in the above equation, we get as:-

33.1=128.9-298.15\times \Delta S

-29815\Delta S=-9580

\Delta S=-9580 = 0.32131 kJ/Kmol

So, For reaction to be spontaneous, \Delta G

Thus, For minimum temperature:-

\Delta H-T\times \Delta S=0

128.9-T\times 0.32131=0

T=\frac{128.9}{0.32131}=401.17\ K

<u>Hence, 401.17 K is the minimum temperature at which the reaction will become spontaneous under standard state conditions.</u>

6 0
3 years ago
Write the atomic symbol (A ZX) for each of the following isotopes. a. Z $ 8, number of neutrons $ 9 b. the isotope of chlorine i
klemol [59]

Answer:

Explanation:

a) O (oxygen) but there's not enough info to determine the isotope  

b) superscript-37 subscript-17 Cl  

c) superscript-60 subscript-27 Co  

d) superscript-57 subscript-26 Fe  

e) don't know what you mean here  

f) superscript-7 subscript-3 Li  

Edit:  

a) superscript-17 subscript-8 O  

e) superscript-131 subscript-53 I

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2. How is the solute being dissolved in the given solvent?​
galben [10]
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Explain how you would find the mass percent<br> of each element in water.
nydimaria [60]

Answer:

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