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Vadim26 [7]
3 years ago
6

Which keystone species feed on other animals and prevent them from damaging the ecosystem?

Chemistry
1 answer:
Arisa [49]3 years ago
8 0
Predators? I just looked it up lol
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How many moles of carbon dioxide gas should be produced when 10.0 g of C2H6 are combusted at STP?
Finger [1]

Answer:

                    0.665 moles of CO₂

Explanation:

                     The balance chemical equation for the combustion of Ethane is as follow:

                            2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O

Step 1: <u>Calculate moles of C₂H₆ as;</u>

                              Moles  =  Mass  /  M.Mass

Putting values,

                              Moles  =  10.0 g / 30.07 g/mol

                              Moles  =  0.3325 moles

Step 2: <u>Calculate Moles of CO₂ as;</u>

According to balance chemical equation,

                    2 moles of C₂H₆ produced  =  4 moles of CO₂

So,

             0.3325 moles of C₂H₆ will produce  =  X moles of CO₂

Solving for X,

                      X  =  0.3325 mol × 4 mol ÷ 2 mol

                      X = 0.665 moles of CO₂

3 0
3 years ago
Which is an example of a medicine that is made up of synthetic materials?
iren [92.7K]

Answer: Aspirin

Explanation:

6 0
2 years ago
1. What determines the reactivity of an atom?
Veronika [31]
The number of electrons in the outermost shell of an atom determines<span> its </span>reactivity<span>.</span><span>
</span>
5 0
3 years ago
What type of plate boundary is<br> shown in the diagram below?
ryzh [129]
Answer : The second one
8 0
2 years ago
What could a scientist do to determine what era the Eocene period belongs to on the geologic timescale?
Aleks [24]

Answer:

Study information related to the Cenozoic era

Explanation:

Answer:

Study information related to the Cenozoic era

Explanation:

Eocene can be categorized as early epochs, It comes after the Paleocene Epoch and precedes the Oligocene Epoch. Eocene got it's origin from the Greek eos meaning ( Dawn). The beginning of Eocene produce the two appearance of two new groups of animals among the terrestrial vertebrates which are; the artiodactyls and the perissodactyls.

Eocene Epoch is reffered to as the second epoch in the order of the division of Cenozoic period . therefore, there is need for scientist to study information related to the Cenozoic era in other to know the geological time scale Eocene belongs to.

7 0
3 years ago
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