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Liono4ka [1.6K]
3 years ago
10

Use the scenario to answer the following question. Four scientists observed an area of land that had been cleared of all trees a

nd bushes to make space for a power line. Each scientist had a different argument about the impact clearing this area of land might have on the bird population living in the ecosystem. Which scientist’s argument demonstrates how the ecosystem will MOST LIKELY be impacted? A. Scientist 4: The rate of erosion will decrease causing less food and shelter to be available to the birds. B. Scientist 1: The natural enemies of birds will be eliminated causing less food and shelter to be available to the birds. C. Scientist 2: Weather conditions may change causing less food and shelter to be available to the birds. D. Scientist 3: The population of trees in the environment will decrease causing less food and shelter to be available to the birds.
Chemistry
2 answers:
wel3 years ago
5 0

Answer:

c

Explanation:

Blizzard [7]3 years ago
3 0

Answer:

b

Explanation:t not sure

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What is the mass in grams of 0.700 moles of water
ra1l [238]

Answer: 12.61 g of H2O

Explanation:

0.700 mol H2O  x  __18.016 g__  =  12.6112 g of H2O

                                 1 mol H2O

Personally, I would round to 12.61 g of H2O, but round to however many significant figures asked for.

My chemistry teacher gave us this map (image attached) to teach us how to do conversions. Just follow the map. I think it's pretty straight forward. I hope this helps.

3 0
4 years ago
In a unimolecular reaction with twice as much starting material as product at equilibrium, what is the value of Keq? Is ΔG o pos
lubasha [3.4K]

Answer : The value of K_{eq} is, 0.5 and \Delta G= positive.

Explanation :

The unimolecular reaction is:

A\rightarrow B

In unimolecular reaction, the starting material is 2 times to the product.

A=2B      .........(1)

As we know that:

K_{eq}=\frac{B}{A}     ...........(2)

Now substitute equation 1 in 2, we get:

K_{eq}=\frac{\frac{A}{2}}{A}

K_{eq}=0.5

Now we have to calculate the value of \Delta G^o at 298 K.

\Delta G^o=-RT\ln K_{eq}

where,

\Delta G^o = standard Gibbs free energy = ?

R = gas constant = 8.314 J/mol.K

T = temperature = 298 K

K_{eq} = equilibrium constant = 0.5

Now put all the given values on the above formula, we get:

\Delta G^o=-(8.314J/mol.K)\times (298K)\ln (0.5)

\Delta G^o=1717.32J/mol

Thus, the value of \Delta G^o at 298 K is, 1717.32 J/mol

As we know that:

\Delta G= +ve, reaction is non spontaneous

\Delta G= -ve, reaction is spontaneous

\Delta G= 0, reaction is in equilibrium

Thus, the \Delta G= +ve. So, the reaction is non spontaneous.

8 0
4 years ago
A mixture in which different materials can be easily distinguished.
Juli2301 [7.4K]

Answer:

heterogeneous mixture.

Explanation:

took k12 test

8 0
2 years ago
why do astronomers use frequencies other than the visible ones when they are investigating the universe?
Aneli [31]
Because different objects give out electromagnetic radiation at different frequencies. Some objects are very ea...

Hope this help
4 0
3 years ago
Which noble gases can form compounds and under what conditions? Give EXAMPLES
rodikova [14]

Answer:

Following

Explanation:

4 0
4 years ago
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