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2 years ago

What is the concentration of the hydroxide ion? Given that the concentration of the hydronium ion is 2.3 X 10^-7 M

Chemistry

1 answer:

professor190 [17]2 years ago

8 0

Answer:

4.35 * 10^-8 M

Explanation:

Since the concentration of the hydronium ion= 2.3 X 10^-7 M

And we know that;

[H3O^+] [OH^-] = 1 * 10^-14

[H3O^+] = concentration of the hydronium ion

[OH^-] = concentration of the hydroxide ion

So;

[OH^-] =1 * 10^-14/[ H3O^+]

But [H3O^+] = 2.3 X 10^-7 M

[OH^-] = 1 * 10^-14/2.3 X 10^-7

[OH^-] = 4.35 * 10^-8 M

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Write the name and formula for the chemical substance which is produced in most acid-base neutralization reactions

Minchanka [31]

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3 years ago

A 298 lb person must receive Heparin, determine the number of units given every hour (Heparin 8.0 units/kg per hour). Enter your

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Answer:

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Explanation:

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2 years ago

A scientist made careful measurements of the pressure and temperature of many different gases. Based on these measurements, he c

alex41 [277]

Answer:

c. law

Explanation:

Law -

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Law is a widely accepted information , which can get altered by some new inventions or exception.

A law is stated in words as well as in the form of some mathematical relationships or equations.

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The correct option is c. law .

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3 years ago

Which describes the molecule below?

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Answer:

Option D. A liquid with three unsaturated fatty acids.

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3 years ago

Consider Nal → Na+ + - and the following information.

Jobisdone [24]

Answer:

47 kJ·mol⁻¹

Explanation:

NaI(s) ⟶ Na⁺(aq) + I⁻(aq); ΔH = ?

We can carry out this process in a series of steps.

1. Convert the solid to its gaseous ions.

NaI(s) ⟶ Na⁺(g) + I⁻(g); -ΔH(lat) = 704 kJ

2. Hydrate the Na⁺ ions

Na⁺(g) ⟶ Na⁺(aq); ΔH(hyd) = - 410.0 kJ

3. Hydrate the I⁻ ions

I⁻(g) ⟶ I⁻(aq); ΔH(hyd) = -247

4. Add the equations

Cancel ions that occur on opposite sides of the reaction arrow

ΔH/kJ·mol⁻¹

NaI(s) ⟶ Na⁺(g) + I⁻(g); +704

Na⁺(g) ⟶ Na⁺(aq); - 410.0

I⁻(g) ⟶ I⁻(aq); -247

NaI(s) ⟶ Na⁺(g) + I⁻(g) 47

The heat of solution of NaI is 47 kJ·mol⁻¹.

6 0

3 years ago