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Alik [6]
4 years ago
6

Help with the chart please​

Chemistry
1 answer:
Nookie1986 [14]4 years ago
4 0

what exactly am i helping with here i cant quite see

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At a certain temperature the rate of this reaction is first order in HI with a rate constant of :0.0632s2HIg=H2g+I2g Suppose a v
olya-2409 [2.1K]

Answer:

\boxed{\text{28.0 s}}

Explanation:

Whenever a question asks you, "How long does it take to reach a certain concentration?" or something like that, you must use the appropriate integrated rate law expression.

The integrated rate law for a first-order reaction is  

\ln \left (\dfrac{[A]_{0}}{[A]} \right ) = kt

Data:

[A]₀ = 1.28 mol·L⁻¹

[A] = 0.17 [A]₀

  k = 0.0632 s⁻¹

Calculation:

\begin{array}{rcl}\ln \left (\dfrac{[A]_{0}}{0.170[A]_{0}} \right ) & = & 0.0632t\\\\\ln \left (5.882) & = & 0.0632t\\1.772 & = & 0.0632t\\\\t & = & \dfrac{1.772}{0.0632}\\\\t & = & \textbf{{28.0 s}}\\\end{array}\\\text{It will take } \boxed{\textbf{28.0 s}} \text{ for [HI] to decrease to 17.0 \% of its original value.}

8 0
3 years ago
Hiii please help me for balancing chemical equations:
Zarrin [17]

Answer:

KI + Cl2 = KCl + I2

Explanation:

hope this helps!!!

7 0
3 years ago
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A chemistry journal requires that all new research papers be peer reviewed by other scientists before they are published. This
ElenaW [278]
Validity is the answer
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3 years ago
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What determines how molecules are redistributed in diffusion?​
FinnZ [79.3K]

Answer:

Factors That Affect Diffusion. Molecules move constantly in a random manner at a rate that depends on their mass, their environment, and the amount of thermal energy they possess, which in turn is a function of temperature

Explanation:

4 0
3 years ago
a hydrate of cocl2 with a mass of 6.00 g is heated strongly. after cooling the mass of the a hydrate is 3.27g. how many grams of
nlexa [21]
The term hydrate would mean that the compound contains water molecules. When this compound is heated, the water molecules are lost first which means that what remains would be the dried compound. Therefore, the H2O lost from the hydrate would be 6.00g - 3.27g = 2.73 g.
6 0
4 years ago
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