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7nadin3 [17]
3 years ago
5

PLEASE HELP ME!!!!!!!!!!!!!!!!!!

Chemistry
2 answers:
Umnica [9.8K]3 years ago
5 0

they need it to make oxygyn for us and make sugar...sry if that made no sense...it made sense in my head

Eduardwww [97]3 years ago
4 0

Oxygen is needed to break the sugar into carbon dioxide, releasing energy the plants can use to stay alive. However, plants also take in energy from the sun(light), carbon dioxide from the atmosphere, and water from the soil; they use all of them in order to make sugar, and release oxygen.

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3 years ago
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Which one of the following substances would be the most soluble in CCl4?
maria [59]

Answer: Option (d) is the correct answer.

Explanation:

Carbon tetrachloride (CCl_{4}) is a non-polar solvent. Whereas out of the given options, Na_{2}SO_{4}, H_{2}O, CH_{3}CH_{2}CH_{2}CH_{2}OH, and HI are all polar molecules.

On the other hand, only C_{4}H_{10} is non-polar molecule.

Also it is known that like dissolves like.

So, being non-polar CCl_{4} will dissolve the give alkane, C_{4}H_{10}.

5 0
3 years ago
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love history [14]

Answer:

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Explanation:

3 0
2 years ago
Calculate the standard cell potential at 25 ∘c for the reaction x(s)+2y+(aq)→x2+(aq)+2y(s) where δh∘ = -793 kj and δs∘ = -319 j/
QveST [7]
First we will calculate free energy change:
ΔG₀ = ΔH₀ - (T * ΔS₀)
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We know the relation between free energy change and cell potential is:
ΔG₀ = - n F E⁰ where
F = Faraday's constant = 96485 C/mol
n = 2 (given by equation that the electrons involved is 2)
ΔG₀ = - 2 x 96485 x E⁰
- 698 kJ = - 2 x 96485 x E⁰
E⁰ = (698 x 1000) / (2 x 96485) = 3.62 volts   
 
5 0
3 years ago
Numbers in scientific notation must be expressed in this form m times 10^n where
enot [183]

Answer:

Hi there I think the awnser is B. or A. lol but im 90% its A.

Explanation:

xoxo hope this helps

hugs and kisses also your pfp is hella cute:)

7 0
2 years ago
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