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il63 [147K]
2 years ago
15

ASAP PLS 100 POINTS Which statement best describes the role of oxygen in cellular respiration?

Chemistry
2 answers:
Svetradugi [14.3K]2 years ago
7 0

Answer:

Option C

Explanation:

Oxygen molecules form as sugar molecules are broken down.

Sugar or carbohydrates are known as glucose or sucrose and malltose i.e C6H12O6 etc.

So they are broken down by cellular respiration and forms Oxygen for cells

Vinvika [58]2 years ago
5 0
It’s A .. I think I hope this helps !
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An aqueous basic solution has a concentration of 0. 050 m and kb is 4. 4 × 10^-4. What is the concentration of hydronium ion in
Alex_Xolod [135]

An aqueous basic solution has a concentration of 0. 050 m and kb is 4. 4 × 10^-4, the concentration of hydronium ion in this solution (m) is 2.234 × 10⁻¹² M.

Methylamine is an amine which is an organic weak base. Its chemical formula is CH₃NH₂. When it undergoes hydrolysis wherein water is acting as an acid, the reaction would be

CH₃NH₂ + H₂O ⇆  CH₃NH₃ + OH⁻

Then, we use the ICE analysis which stands for Initial-Change-Equilibrium.

CH₃NH₂ + H₂O ⇆  CH₃NH₃ + OH⁻

Initial                    0.05          -                 0         0

Change                 -x                              +x       +x

----------------------------------------------------------------------------

Equilibrium         0.05-x                           x          x

Then, we use the equation for the equilibrium constant of basicity.

Kb = [CH₃NH₃][OH⁻]/[CH₃NH₂] = 4.4×10⁻⁴

4.4×10⁻⁴ = [x][x]/[0.05-x]

[x] = 4.4756×10⁻³

Here, variable x denotes the number of moles of the substance which is involved in the reaction. Since the equilibrium amount of OH⁻ is equal to x, then the concentration of OH⁻ is also 4.4756×10⁻³. Thus,

pOH = -log[OH⁻]

pOH = -log[4.4756×10⁻³] = 2.35

The relationship between pOH and pH is that pH + pOH = 14. Thus,

pH = 14 - 2.35 = 11.65

pH = -log[H⁺]

11.65 = -log[H⁺]

[H⁺] = 2.234 × 10⁻¹² M

Thus, we find the concentration of solution is 2.234 × 10⁻¹² M.

Learn more about aqueous solution: brainly.com/question/11097800

#SPJ4

5 0
2 years ago
Which sample of water contains particles having the highest average kinetic energy?
Makovka662 [10]
(1) 25 ml of water at 95 degrees Celsius is your answer. Temperature is the average kinetic energy of the substance that it measures, therefore the highest temperature choice, aka #1, is your answer.
7 0
3 years ago
How many dL in 1,000 mL
Anna007 [38]

1,000 mL is the same as 10 dL.

6 0
3 years ago
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A fly hits a windshield of a truck. The truck exerts a force on the fly, and
sweet-ann [11.9K]

Answer:

A fly hits a windshield of a truck.

Explanation:

newton's first law

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3 years ago
At a fixed volume, a four-fold increase in the temperature of a gas will lead to _______ in pressure.
aliina [53]

Answer:

Increase in pressure

Explanation:

The rise in temperature will increase the pressure of the gas.

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