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sweet-ann [11.9K]
3 years ago
9

This is for Earth/Space Science. Please help me and thank you in advance. I need this quickly please and thank you.

Chemistry
1 answer:
Nadya [2.5K]3 years ago
6 0
I think the answer should be number 3
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Describe three factors that could limit the growth of the prairie dog population
alexira [117]

Answer:

Changes in environment, food source changes and disease?

Explanation:

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5 0
3 years ago
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When iron metal reacts with oxygen, the reaction can form Fe2O3. Write a balanced chemical equation for this reaction, and find
ryzh [129]
The balanced equation is 
4Fe+3O₂⇒2Fe₂O₃

We know that the mole of Fe₂O₃ is 6, and since the ratio between oxygen and <span>Fe₂O₃ is 3:2, we can see that

3:2 = x:6 (3 oxygen moles can make 2 </span>Fe₂O₃ moles = x oxygen moles can make 6 <span>Fe₂O₃ moles)
</span><span>
Multiply outside and inside (3*6 , 2*x) and put them on opposing sides of the equation

2*x = 3*6
2x=18
x=9
Therefore 9 moles of oxygen is needed.

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6 0
3 years ago
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GUYS I NEED THIS ASAP ​
liberstina [14]
It’s DEFINITELY 2 like DEFINITELY
8 0
3 years ago
What feature of a chemical equation is used to balance the equation and make sure it obeys the law of conservation of mass?
taurus [48]

Answer:

b) coefficient

Explanation:

Refer to this example:

CH4  +2  O2  →  CO2+  2  H2O

2 is used as a coefficient in this chemical equation.

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3 years ago
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How is a shadow created during a lunar or solar eclipse?
Zepler [3.9K]
However, as a result of the Sun's large angular size, solar<span> illumination is only partially blocked in the outer portion of the Earth's </span>shadow<span>, which is given the name penumbra. A penumbral </span>eclipse<span> occurs when the Moon passes through the Earth's penumbra. The penumbra causes a subtle darkening of the Moon's surface.</span>
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