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Mekhanik [1.2K]

2 years ago

11

The acid-dissociation constant at 25.0 °c for hypochlorous acid (hclo) is 3.0 ⋅ 10−8. at equilibrium, the molarity of h3o+ in a

0.055 m solution of hclo is ________.

1 answer:

maks197457 [2]2 years ago

3 0

Hypochlorous acid is a weak acid. The $K_{a}$ value for the dissociation of HOCl is $3.0 * 10^{-8}$

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Enter the correct answer for each unit conversion.

Luden [163]

Answer:

50 mm

4 ft

36 ft

250 cm

1 L

Explanation:

Centimeter to millimeter:

1 cm is equal to 10 mm.

5cm× 10 mm/1 cm

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1 foot is equal to 12 inches.

48 inch × 1 feet /12 inch

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Yard to Feet conversion:

1 yard is equal to 3 feet.

12 yd × 3 ft / 1 yd

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One meter is equal to 100 cm.

2.5 m × 100 cm / 1m

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Which statement best compares the energy involved in melting with the energy involved in boiling for a given liquid?

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Red blood cells are placed in a solution and neither hemolysis nor crenation occurs. therefore the solution is

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The answer is isotonic solution. These are solutions where the solute concentration in the solution and inside the cells are levelled and consequently water flows consistently. When red blood cells are positioned in an isotonic solution the cells would always stay the same.

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2 years ago

Why is mining for coal a long-term concern?

Free_Kalibri [48]

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A metallic object holds a charge of −4.8 × 10−6 C. What total number of electrons does this represent? (e = 1.6 × 10−19 C is the

vagabundo [1.1K]

Answer:

$n=3.0\times 10^{13}$

Explanation:

Charge on 1 electron = $-1.6\times 10^{-19}\ C$

The expression for charge is:-

$Charge=n\times q_e$

Given that:- Charge = $-4.8\times 10^{-6}\ C$

$-4.8\times 10^{-6}=n\times (-1.6\times 10^{-19})$

$n=\frac{4.8\times 10^{-6}}{1.6\times 10^{-19}}=3.0\times 10^{13}$

Total number of electrons, n = $3.0\times 10^{13}$

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