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statuscvo [17]
2 years ago
9

Q3.4. complex i transfers electrons to q (coenzyme q) in one of the reactions in the electron transport chain. which molecule is

reduced and which is oxidized in this reaction?
Chemistry
1 answer:
xenn [34]2 years ago
5 0
A small molecular in reaction to electron
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c) What does the number on the upper right represent and which subatomic particle can change this number (but not the symbol for
SVETLANKA909090 [29]

Answer:

Explanation:

The number on the upper right represents the mass number.

  Mass number is the number of protons and neutrons that makes up an atom.

Mass number simply denotes the number of particles in the nucleus of an atom.

  Mass number  = number of protons + number of neutrons

Number of protons is the number of positively charged particles in the atom

Number of neutrons is the number of uncharged particles.

 When the number of protons or number of neutrons changes, the mass number will change.

  For example;

                   O¹⁶₈

 Mass number = 16

 Atomic number = 8

8 0
2 years ago
An HCl solution has a concentration of 0.09714 M. Then 10.00 mL of this solution was then diluted to 250.00 mL in a volumetric f
aivan3 [116]

Answer:

a. 3.8856x10⁻³M HCl

b. 1.23x10⁻⁴M OH⁻

c. 1.23x10⁻⁴M Ag⁺

d. Ksp = [Ag⁺] [OH⁻]

Explanation:

a. The reaction that you are studying is:

HCl(aq) + AgOH(aq) → H₂O(l) + AgCl(s)

The HCl solution is diluted from 10.00mL to 250.00mL, that is:

250.00mL / 10.00mL = <em>25 -The solution is diluted 25 times-</em>

As original concentration of HCl is 0.09714M, the concentration of the diluted solution is:

0.09714M / 25 =

<h3>3.8856x10⁻³M HCl</h3><h3 />

b. 1 mole of HCl reacts per mole of AgOH, moles of HCl that reacts are:

7.93mL = 7.93x10⁻³L × (3.8856x10⁻³mol HCl / L) = 3.0813x10⁻⁵ moles of HCl.

Based on the reaction, you have in solution

<em>3.0813x10⁻⁵ moles of AgOH = Ag⁺ = OH⁻</em>

The AgOH solution was 250.0mL = 0.2500L, its concentration is:

3.0813x10⁻⁵ moles OH⁻ / 0.2500L =

<h3>1.23x10⁻⁴M OH⁻</h3><h3 />

c. In solution, AgOH produce Ag⁺ and OH⁻ in equals proportions, that means:

1.23x10⁻⁴M OH⁻ =

<h3>1.23x10⁻⁴M Ag⁺</h3><h3 />

d. The solubility product reaction of AgOH(s) is:

AgOH(s) ⇄ Ag⁺(aq) + OH⁻(aq)

Where Ksp for this reaction is defined as:

<h3>Ksp = [Ag⁺] [OH⁻]</h3>
5 0
3 years ago
How would you describe the connection between the amount of energy a type of electromagnetic wave has and how that wave is used
Mazyrski [523]

Answer:

Uses of various electromagnetic waves depend on their relative energy.

Explanation:

The electromagnetic spectrum is the term used by scientists to describe the entire range of light that exists from radio waves to gamma rays. Electromagnetic waves is a wave of alternating electric and magnetic fields. The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to frequency and wavelength. The sun, earth, and other bodies radiate electromagnetic energy of varying wavelengths. Electromagnetic energy passes through space at the speed of light in the form of sinusoidal waves. The spectrum of waves is divided into sections based on wavelength. The shortest waves are gamma rays, which have wavelengths of 10^-6 microns or less. The longest waves are radio waves, which have wavelengths of many kilometers.

The application of various electromagnetic waves in science and technology depends on the energy of the wave. Electromagnetic waves that possess very high amount of energy are used in medical diagnosis, treatment of tumors, searching of baggage and detection of flaws in metal casting. Examples of such electromagnetic waves include gamma rays and xrays.

Some part of the electromagnetic spectrum possess energy enough to excite chemical bonds and produce spectra characteristic of certain functional groups in molecules. The ultraviolet and infrared rays fall into this category.

Some portion of the spectrum possesses very low energy and long wavelength and are mostly used for communication, mild medical diagnosis and resonance imaging/spectroscopy. Radio waves fall into this category.

7 0
2 years ago
PLSSSSSSSSSS HELP!!! I REALLY NEED IT SO MUCH :( I PROMICE TO GIVE BRAINLIEST AND FIVE STARS AND A THANKS! 6TH GRADE SCIENCE! i
Vsevolod [243]

Answer:

100 POINTS! (50 split up) PLSSSSSSSSSS HELP!!! I REALLY NEED IT SO MUCH :( I PROMICE TO GIVE BRAINLIEST AND FIVE STARS AND A THANKS! 6TH GRADE SCIENCE! i used all my points for this!

You measure the mass of an apple using a balance. You get these three measurements:

Trial 1: 167.0 g

Trial 2: 166.9 g

Trial 3: 167.2 g

You know that the true mass of the apple is 172 g. Describe your results in terms of precision and accuracy. Explain your answer in a paragraph for the best grade.

Explanation:

8 0
3 years ago
Which element do all organic compounds contain?
bulgar [2K]

Answer:

hydrogen oxygen or nitrogen

6 0
2 years ago
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