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Aleksandr [31]
3 years ago
13

Scientists are studying different jackets made for extremely cold, snowy weather. They are trying to find jackets

Chemistry
1 answer:
koban [17]3 years ago
8 0

Answer:

Which jacket traps the most heat.

Explanation:

I took the test

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4 years ago
G the normal range of the ph of blood is between 7.35 and 7.45; variations beyond this range have significant health implication
Fiesta28 [93]

Answer : the hydrogen ion concentrations for pH = 7.35 and pH = 7.45 are 4.46 x 10⁻⁸ M and 3.54 x 10⁻⁸ M respectively.

When the pH of a solution is less than 7, the hydrogen ion concentration is higher and therefore the solution is acidic.

On the other hand, when the pH of a solution is greater than 7, hydroxide ion concentration is higher and the solution acts as a base.

The normal pH range of blood is given as 7.35 - 7.45  which is greater than 7. That means blood is slight basic in nature.

Let us find hydroxide ion concentration of blood.

pH + pOH = 14

7.35 + pOH = 14

pOH = 6.65

pOH = - log [OH-]

[OH-] = 10^{-6.65}

[OH-] = 2.24 \times 10^{-7}

Ionic product of water is written as,

[H+] [OH-] = 1 \times 10^{-14}

Let us plug in the calculated value of [OH-]

[H+] = \frac{1 \times 10^{-14}}{2.24 \times 10^-7} = 4.46 \times 10^{-8} M

The hydrogen ion concentration for pH = 7.35 is 4.46 x 10⁻⁸ M

Calculation of [H+] for pH = 7.45

pOH = 6.55

[OH-] = 2.82 x 10⁻⁷

[H+] = \frac{1 \times 10^{-14}}{2.82 \times 10^-7} = 3.54 \times 10^{-8} M

Similarly, for pH = 7.45, we get hydrogen ion concentration of 3.54 x 10⁻⁸ M.

8 0
4 years ago
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