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spayn [35]
3 years ago
7

Weather along most fronts is usually cloudy with precipitation because the warm air along most fronts usually

Chemistry
1 answer:
il63 [147K]3 years ago
6 0
C - rising and cooling, causing water vapor to condense
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The reaction 2HI → H2 + I2 is second order in [HI] and second order overall. The rate constant of the reaction at 700°C is 1.57
In-s [12.5K]

Answer:

1.135 M.

Explanation:

  • For the reaction: <em>2HI → H₂ + I₂,</em>

The reaction is a second order reaction of HI,so the rate law of the reaction is: Rate = k[HI]².

  • To solve this problem, we can use the integral law of second-order reactions:

<em>1/[A] = kt + 1/[A₀],</em>

where, k is the reate constant of the reaction (k = 1.57 x 10⁻⁵ M⁻¹s⁻¹),

t is the time of the reaction (t = 8 hours x 60 x 60 = 28800 s),

[A₀] is the initial concentration of HI ([A₀] = ?? M).

[A] is the remaining concentration of HI after hours ([A₀] = 0.75 M).

∵ 1/[A] = kt + 1/[A₀],

∴ 1/[A₀] = 1/[A] - kt

∴ 1/[A₀] = [1/(0.75 M)] - (1.57 x 10⁻⁵ M⁻¹s⁻¹)(28800 s) = 1.333 M⁻¹ - 0.4522 M⁻¹ = 0.8808 M⁻¹.

∴ [A₀] = 1/(0.0.8808 M⁻¹) = 1.135 M.

<em>So, the concentration of HI 8 hours earlier = 1.135 M.</em>

8 0
3 years ago
Covalent bond name: N6Cl10
soldier1979 [14.2K]

Covalent Bond Name :N6Cl10

Explanation:

  • Covalent compounds are named by using numerical prefixes to identify the number of atoms in the molecule. For example Carbon Dioxide CO2 and Carbon Monoxide CO . ... Drop the double vowel for the prefix and the element of the second element in the compound.

  • The three types as mentioned in the other answers are polar covalent, nonpolar covalent, and coordinate covalent. The first, polar covalent, is formed between two nonmetals that have a difference in electronegativity. They share their electron density unevenly.

  • Examples of Covalent Bond:  Water. An example is water. Water consists of a covalent bond containing hydrogen and oxygen bonding together to make H2O. ...Diamonds. A diamond is an example of Giant Covalent bond of carbon. A diamond has a giant molecular structure. ...Vulcanized rubber. Another example is vulcanized rubber.
  • Covalent bonds are especially important since most carbon molecules interact primarily through covalent bonding. Covalent bonding allows molecules to share electrons with other molecules, creating long chains of compounds and allowing more complexity in life.
7 0
4 years ago
Complete the sentence. The lower the hydrogen ion concentration, the ______ the pH.
enyata [817]
The answer is higher, because the more H+ ions there are, the more acidic the solution is, and the lower the ph it will have.
5 0
4 years ago
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What does the name cambrian period mean?
cupoosta [38]

Answer:

the first geological time period of the Paleozoic Era

Explanation:

6 0
2 years ago
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Pachacha [2.7K]

Answer:

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Explanation:

6 0
3 years ago
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