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Sholpan [36]
2 years ago
15

On easter island what was the primary ecological disaster and why did the people not prevent it?

Chemistry
1 answer:
Amiraneli [1.4K]2 years ago
4 0

Answer:Easter Islanders Didn't Cause Ecological Disaster on Their Island, New Research Finds. New research provides evidence contrary to the widely-held belief that the prehistoric population of Easter Island (Rapa Nui) caused an ecological disaster through rapid deforestation and over-exploitation of natural resources.

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How many liters of radon gas would be in 3.43 moles at standard temperature and pressure (273 K and 100 kPa)?
MissTica

Answer: Option B. 76.83L

Explanation:

1 mole of a gas occupy 22.4L at stp. This implies that 1mole of Radon also occupy 22.4L at stp.

If 1 mole of Radon = 22.4L

Therefore, 3.43 moles of Radon = 3.43 x 22.4 = 76.83L

5 0
3 years ago
The potential energy diagram shows the gain and loss of potential energy as water molecules decompose into hydrogen and oxygen.
Dovator [93]

Answer:

  • The<em> diagram</em> with the five<em> labels</em> of the parts is in the image attached. Please, see the image.

Explanation:

<u>1) General explanation:</u> a <em>potential chemical energy diagram</em> is used to show how the <em>reactants</em> gain energy until they reach the <em>activation energy</em>, form the <em>activated complex</em>, and release part of the energy to form the <em>products</em>.

The difference between the chemical potential energy of the products and the reactants is the <em>enthalpy of the reaction</em>:

  • ΔH rxn = ΔH products - ΔH reactants.

The labels that correspond to each part of the diagram are explained next.

<em><u>2) Reactants:</u></em>

This is the substances at the start, so they appear on the left bottom side of the diagram.

<em><u>3) Activation energy:</u></em>

It is the energy that the reactants must reach (the highest point) in order to the reaction occurs.

<u><em>4) Activated complex:</em></u>

This is the intermediate state and of highest energy. The reactants have formed a complex at mid way between the reactants and the products.

<u><em>5) Products:</em></u>

These are the substances formed when the reaction is completed. They are lower in energy than the activated complex. They can be either higher or lower in energy than the reactants. The products are shown to the right of the diagram.

<em><u>6) Enthalpy of the reaction:</u></em>

The enthalpy of the reaction is the difference in energy of the products and the reactants. In this case, since, the products are higher in energy, it means that the reaction absorbed energy and it is an endothermic reaction.

4 0
3 years ago
9. When you move your hand from a hot stove what is the stimulus you are reacting to?
Gemiola [76]

Answer:

if you touch a hot stove, the nerves in your skin shoot a message of pain to your brain. The brain then sends a message back telling the muscles in your hand to pull away.

Explanation:

4 0
2 years ago
Which product formed when MgO and H2O react together?
seropon [69]
When MgO and H2O react they form Magnesium Hydroxide Mg(OH)2
4 0
3 years ago
Read 2 more answers
PLEASE HELP ME !!!!!!
Leviafan [203]

Answer: b

Explanation:

By adding heat you are adding more energy

5 0
3 years ago
Read 2 more answers
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