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lora16 [44]
2 years ago
13

Which group of elements are the most important for living organisms?\

Chemistry
2 answers:
Drupady [299]2 years ago
6 0
B- Carbon nitrogen and oxygen. All organisms are made up of carbon, oxygen is essential to breath, and nitrogen makes up most of earth's atmosphere.
Serhud [2]2 years ago
4 0
The answer is b carbon nitrogen and oxygen

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Explain why bond angle of H2O is greater than OF2
atroni [7]
It's only a small difference (103 degrees versus 104 degrees in water), and I believe the usual rationalization is that since F is more electronegative than H, the electrons in the O-F bond spend more time away from the O (and close to the F) than the electrons in the O-H bond. That shifts the effective center of the repulsive force between the bonding pairs away from the O, and hence away from each other. So the repulsion between the bonding pairs is slightly less, while the repulsion between the lone pairs on the O is the same -- the result is the angle between the bonds is a little less.

Hope this helps!
7 0
3 years ago
How do you express 0.00026 in scientific notation
Rus_ich [418]
2.6x10negative4power 2.6x10^-4
6 0
3 years ago
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Can someone help me rq
Andru [333]

Answer: there

Explanation:

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A. What is the chemical reaction between hydrogen and sulfur?
DanielleElmas [232]

Answer & Explanation:

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6 0
3 years ago
Please help
inna [77]

From the calculation, the standard free energy of the system is -359kJ.

<h3>What is the standard free-energy?</h3>

The  standard free-energy is the energy present in the system. We have to first obtain the cell potential using the formula;

Ereduction - E oxidation = 0.96 V - 0.34 V = 0.62 V

Using the formula;

ΔG = -nFEcell

ΔG =-(6 * 96500 * 0.62)

ΔG =-359kJ

Learn more about free energy:brainly.com/question/15319033

#SPJ1

3 0
1 year ago
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