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Anna35 [415]
2 years ago
7

Special structures in the cells of plants capture sunlight energy to power photosynthesis. What materials must plants obtain fro

m their environment to perform photosynthesis?
sunlight, carbon dioxide, and simple sugars

sunlight, water, and carbon dioxide

sunlight, oxygen, and carbon dioxide

sunlight, water, and oxygen
Chemistry
1 answer:
Svetach [21]2 years ago
3 0

Answer:

Sunlight

Water

And carbon dioxide

Additional information :

6CO2 + 6H2O → C6H12O6 + 6O2

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Why melting point of Fe in blast furnace is lower than ellingham?
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Answer:

Because they are different oxides.

Explanation:

In both processes they are involve Iron Oxides, but in the case of Ellingham diagrams, it is consider the Iron in combination with oxygen to form FeO, so the melting point is around 1600  ºC. In the case of blast furnace, the Fe that is present in the ores, are primary the hematite (Fe2O3) and the magnetite (Fe3O4).

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3 years ago
Calculate the molar solubility of fe(oh)2 in pure water. (the value of ksp for fe(oh)2 is 4.87×10−17.)
rosijanka [135]
When we have this balanced equation for a reaction:
Fe(OH)2(s) ↔ Fe+2  + 2OH-

when Fe(OH)2 give 1 mole of Fe+2 & 2 mol of OH-
so we can assume [Fe+2] = X and [OH-] = 2 X
 when Ksp = [Fe+2][OH-]^2
and have Ksp = 4.87x10^-17 
[Fe+2]= X
[OH-] = 2X
so by substitution 
4.87x10^-17 = X*(2X)^2
∴X^3 = 4.8x10^-17 / 4
∴the molar solubility X = 2.3x10^-6 M
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The answer is agriculture.

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None sorry I can’t I 8558993
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