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Aleks [24]
3 years ago
12

True of False: the only thing plants do in an ecosystem is provide food.​

Chemistry
1 answer:
jekas [21]3 years ago
6 0

Explanation:

False, they also provide oxygen

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How many molecules are in 2.50 moles of SO2
dusya [7]

Every compound or element has a fixed number of molecules per mole. This is given by the Avogadros number which is about 6.022 x 10^23 molecules per mole. Therefore:

 

molecules = 2.50 moles * (6.022 x 10^23 molecules / mole)

<span>molecules = 1.5055 x 10^24 molecules of SO2</span>

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2 years ago
Positive feedback is when the change caused by the stimulus is A )decreased B) changes constantly C) nonexistent D) Increased HE
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3 years ago
Consider the addition of HBr to 2-pentene. Indicate the re
lana [24]

Answer:

This addition reaction yields 3-BromoPentane and 2-BromoPentane.

Explanation: The reaction is an addition reaction that follows the Markonikoff's principle engaging the electrophillic addition mechnism with electrophile having no lone pair so rearrangement of carbonation is possible. It yields two possible products.

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iogann1982 [59]

2. is point source

3. is non point source

8 0
3 years ago
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An unknown solution has a pH of 7.2. Which of these chemicals is likely to cause the greatest decrease in the pH of the solution
prohojiy [21]

Answer:

HNO₃.

Explanation:

  • It is known that acids decrease the pH of the solution, while bases increase  the pH of the solution.

So, HF and HNO₃ decrease the pH of the solution as they produce H⁺ in the solution.

While, KOH and NH₃ increase the pH of the solution as they produce OH⁻ in the solution.

HNO₃ will decrease the pH of the solution greater than HF.

  • Because HNO₃ is strong acid that decomposes completely to produce H⁺ more than the same concentration of HF that is a weak acid which does not decomposed completely to produce H⁺.
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3 years ago
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