Reaction coordinates represent: A. The balanced equation for a chemical reaction. B. The change in pH for a chemical reaction. C
. The potential energy change for a chemical reaction. D. None of the above
1 answer:
Answer:
C. The potential energy change for a chemical reaction.
Explanation:
The reaction coordinate q illustrates, graphically, the energy changes during exothermic and endothermic reactions. This graphical representation of the energy changes in the course of a chemical reaction is known as reaction coordinates. A reaction coordinate is a graphical sequence of steps by which the reaction progresses from reactants through activated complexes to products. Reaction coordinates explain how far a reaction has proceeded towards the products or from the reactants.
From the images attached below, we can see the reaction coordinates in the reaction profiles.
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Answer :
(a) The given number in 2 significant figures will be,
(b) The given number in 4 significant figures will be,
(c) The given number in 3 significant figures will be,
Explanation :
Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.
(a) The given number 00003554 converted into 2 significant figures.
In 00003554, there are 4 significant figures. Now we have to convert it into 2 significant figures.
The given number in 2 significant figures will be,
(b) The given number 35.8348 converted into 4 significant figures.
In 35.8348, there are 6 significant figures. Now we have to convert it into 4 significant figures.
The given number in 4 significant figures will be,
(c) The given number 22.4555 converted into 3 significant figures.
In 22.4555, there are 6 significant figures. Now we have to convert it into 3 significant figures.
The given number in 3 significant figures will be,
<h3>Answer:</h3>
251 mol Xe
<h3>General Formulas and Concepts:</h3><u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
- Left to Right
<u>Chemistry</u>
<u>Atomic Structure</u>
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
<u>Stoichiometry</u>
- Using Dimensional Analysis
<u>Step 1: Define</u>
[Given] 1.51 × 10²⁶ atoms Xe
[Solve] moles Xe
<u>Step 2: Identify Conversions</u>
Avogadro's Number
<u>Step 3: Convert</u>
- [DA] Set up:
- [DA] Multiply/Divide [Cancel out units]:
<u>Step 4: Check</u>
<em>Follow sig fig rule and round. We are given 3 sig figs.</em>
250.747 mol Xe ≈ 251 mol Xe