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GaryK [48]
3 years ago
12

As you are researching the Zebra Mussel, keep in mind the following questions. 1. Where is this organism found? 2. How was this

organism transported to its new ecosystem? 3. Was it intentionally transported, and if so, for what reason? 4. Why is this organism able to spread so rapidly in its new ecosystem? 5. What is the effect of this organism on the ecosystem’s current food web? 6. Is this organism affecting the lives of humans? 7. How is it affecting the lives of humans? 8. Are there any plans for controlling or removing this organism?
Chemistry
1 answer:
pickupchik [31]3 years ago
7 0

Answer:

The zebra mussel is found in freshwater lakes and rivers of the Balkans, Poland, and the former Soviet Union. It was first found in the United States in Lake St. Claire, off of the eastern shore of the state of  Michigan.

Biologists think the zebra mussel was picked up in a freshwater European port in the ballast water of a ship, and was later released into the water on the Canadian side of Lake St. Clair. The zebra mussel was not intentionally transported into its new ecosystem.

The zebra mussel is small, free-swimming, and easily spread by water currents, and can attach to almost any hard surface.

The zebra mussel affects an ecosystem's food web both positively and negatively. The positive effects include serving as a food source to many native fish, birds, and other animals. The negative effects include interfering with other organisms' feeding, growth, movement, respiration, and reproduction.

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Three of Louis Pasteur discovery
konstantin123 [22]
Pasteurization, vaccines against antrax and rabies, discovered the germ fermentation
7 0
3 years ago
What are some examples of fusion
sveticcg [70]

Answer:

Example of a fusion dish: combination of smoked salmon wrapped in rice paper, with avocado, cucumber and crab sticks. Fusion cuisine is cuisine that combines elements of different culinary traditions that originate from different countries, regions, or cultures.

3 0
3 years ago
Determine ΔH for the reaction CaCO3 → CaO + CO2 given these data: 2 Ca + 2 C + 3 O2 → 2 CaCO3 ΔH = −2,414 kJ C + O2 → CO2 ΔH = −
kicyunya [14]

Answer:

The ΔH for the reaction is -456.5 KJ

Explanation:

Here we want to determine ΔH for the reaction;

Mathematically;

ΔH = ΔH(product) - ΔH(reactant)

In the case of the first reaction;

ΔH = ΔH(CaO) + ΔH(CO2) - ΔH(CaCO3)  ...........................(*)

From the other reactions, we can get the respective ΔH for the individual molecule in the reaction

In second reaction;

Kindly note that for elements, molecule of gases, ΔH = 0

What this means is that throughout the solution;

ΔH(Ca)  = 0 KJ

ΔH(O2) = 0 KJ

ΔH(C) = 0 KJ

Thus, in writing the equation for the subsequent chemical reactions, we shall need to write and equate the overall ΔH for the reaction to that of the product alone

So in the second reaction

ΔH = 2ΔH(CaCO3)

Thus;

-2414/2 = ΔH(CaCO3)

ΔH(CaCO3) = -1,207  KJ

Moving to the third reaction, we have;

ΔH = ΔH(CO2)

Hence ΔH(CO2) = -393.5 KJ

For the last reaction;

ΔH = ΔH(CaO)

Hence ΔH(CaO) = -1270 KJ

Going back to equation *

ΔH = ΔH(CaO) + ΔH(CO2) - ΔH(CaCO3)

Using the values of the ΔH  of the respective molecules given above,

ΔH  = -1270 + (-393.5) - (-1207)

ΔH  = -456.5 KJ

8 0
3 years ago
2Pb(s) + O2(aq) + 4H+(aq) → 2H2O(l) + 2Pb2+(aq)
defon

Answer:

The answer to your question is 0.269 g of Pb

Explanation:

Data

Lead solution = 0.000013 M

Volume = 100 L

mass = 0.269 g

atomic mass Pb = 207.2 g

Chemical reaction

                        2Pb(s) + O₂(aq) + 4H⁺(aq) → 2H₂O(l) + 2Pb₂⁺(aq)

Process

1.- Calculate the mass of Pb in solution

Formula

Molarity = \frac{number of moles}{volume}

Solve for number of moles

Number of moles = Volume x Molarity

Substitution

Number of moles = 100 x 0.000013

Number of moles = 0.0013

2.- Calculate the mass of Pb formed.

                       207.2 g of Pb ----------------- 1 mol

                             x g             ----------------- 0.0013 moles

                        x = (0.0013 x 207.2) / 1

                        x = 0.269 g of Pb                                                                

8 0
3 years ago
Read 2 more answers
Please helppp !!
Alex787 [66]
D ................................
7 0
3 years ago
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