What is force?.......
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<u>Answer:</u> The rate constant for the reaction is
<u>Explanation:</u>
Rate law expression for first order kinetics is given by the equation:
where,
k = rate constant = ?
t = time taken for decay process = 2.00 min = 120 seconds (Conversion factor: 1 min = 60 seconds)
= initial amount of the sample = 100 grams
[A] = amount left after decay process = 20 grams
Putting values in above equation, we get:
Hence, the rate constant for the reaction is
<h3>Answer:</h3>
0.836 mol Al
<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> </u>
<u>Chemistry</u>
<u>Stoichiometry</u>
- Using Dimensional Analysis
- Reactions RxN
<u>Step 1: Define</u>
[RxN - Balanced] 2Al (s) + 3H₂SO₄ (aq) → Al₂(SO₄)₃ (aq) + 3H₂ (g)
[Given] 0.418 mol Al₂(SO₄)₃
[Solve] <em>x</em> mol Al
<u>Step 2: Identify Conversions</u>
[RxN] 2 mol Al (s) → 1 mol Al₂(SO₄)₃ (aq)
<u>Step 3: Stoich</u>
- [DA] Set up:
- [DA] Multiply/Divide [Cancel out units]:
<u>Step 4: Check</u>
<em>Follow sig fig rules and round. We are given 3 sig figs.</em>
Since our final answer already has 3 sig figs, there is no need to round.