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Sergio039 [100]
3 years ago
14

Which of the following shows the abbreviation for an Sl unit of density?

Chemistry
2 answers:
lara [203]3 years ago
4 0

Explanation:

ur answer okkkkkkkkkkkkkkkkll

natita [175]3 years ago
3 0
B. Didjdjdndjfkfjfjfjvjdjdbdhfjfi
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Sydney, Australia, Is in the Southern Hemisphere. Which choice describes the conditions in Sydney on or around December 21
olganol [36]

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Calculate the pH of a 0.50 M HIO. The Ka of hypoiodic acid, HIO, is 2.3x10–11.0.305.325.479.474.80
never [62]

Answer:

pH = 5.47

Explanation:

The equilibrium that takes place is:

HIO ↔ H⁺ + IO⁻

Ka = \frac{[H+][IO-]}{[HIO]} = 2.3 * 10⁻¹¹

At equilibrium:

  • [HIO] = 0.5 M - x
  • [H⁺] = x
  • [IO⁻] = x

<u>Replacing those values in the equation for Ka and solving for x:</u>

Ka=\frac{x^2}{0.5-x}=2.3*10^{-11} \\x^2=(2.3*10^{-11})(0.5-x)\\x^2=1.15*10^{-11}-2.3*10^{-11}x\\x^2+2.3*10^{-11}x-1.15*10^{-11}=0\\x=3.39*10^{-6}

Then [H⁺]=3.39 * 10⁻⁶, thus pH = 5.47

7 0
3 years ago
T OR F
Murljashka [212]

Answer:

The statement is  false. See the explanation below, please.

Explanation:

The hydrogen bond or bridge is a type of dipole-dipole interaction that is generated from the attraction of a hydrogen atom and a very electronegative atom (oxygen, fluorine or nitrogen). Examples of hydrogen bridge molecules: Water (H20), ammonia (NH3).

5 0
3 years ago
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