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siniylev [52]
3 years ago
13

Why does oxygen need to be delivered to the cells?

Chemistry
1 answer:
Tomtit [17]3 years ago
8 0
It's because every living cells do respiration. Respiration basically involves the oxidation of food(carbohydrate) to generate energy in form of ATP.
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In the given range,at what temperature does oxy gen have the highest solubility?​
strojnjashka [21]
Water solubility of oxygen at 25oC and pressure = 1 bar is at 40 mg/L water. In air with a normal composition the oxygen partial pressure is 0.2 atm. This results in dissolution of 40 . 0.2 = 8 mg O2/L in water that comes in contact with air.
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3 Aqueous copper(II) sulfate solution is placed in an
Mazyrski [523]

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it will option D green to blue because iron being more reactive displaces copper from its solution

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Why does a tree cast a shadow during the daytime? A. The tree is a source of light for the Earth. B. The tree creates sunlight.
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The initial pressure of a mixture of C6H6 and an excess of H2 in a rigid vessel is 1.21 atm. A catalyst is introduced. After the
KengaRu [80]

Answer:

mole fraction of C6H6 = 0.613 atm

Explanation:

The equation for this reaction is :

          C_6H_6 _{(g)} + 3H_2_{(g)} \to C_6H_{12}_{(g)}

Initial      P₁            P₂             0

Final        0           P₂ -P₁/2      P₁

After completion of the reaction;

P₁  +  P₂  = 1.21 atm                    ----- (1)

P₂  -  P₁/2 +  P₁ = 0.839 atm

P₂ + P₁/2 = 0.839 atm          ----- (2)

Subtracting (2) from (1); we have:

P₁/2 = 0.371

P₁ = 0.742 atm

From(1)

P₁  +  P₂  = 1.21 atm

0.742 atm + P₂  = 1.21 atm

P₂  = 1.21 atm - 0.742 atm

P₂  = 0.468 atm

Thus, the partial pressure of C6H6 = 0.742 atm

∴

Partial pressure = Total pressure × mole fraction of C6H6

mole fraction of C6H6 = Partial pressure /  Total pressure

mole fraction of C6H6 = 0.742 atm / 1.21 atm

mole fraction of C6H6 = 0.613 atm

5 0
3 years ago
PLEASE ANSWER
Vikki [24]
D) refracted
because , the light changes direction.. causing the penny to look bigger than it is.
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3 years ago
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