The correct choice is "cannot be determined" because of weight and height differences
Answer:
n = 1.89 mol.
Explanation:
Think of this as adiabatic free expansion. This means constant temperature -- we know this because the internal energy does not change.
Since the temperature is constant, the entropy change can be given by:
Entropy = nRln(V2/V1)
Entropy = 17.28 J/K. R = 8.314 (gas constant). V2 = 3V. V1 = V.
Thus, we get:
17.28 = n(8.314)ln3
Solve for n. We get n = 1.89 mol.
<h3>
Answer:</h3>
0.0520 mol Zn
<h3>
General Formulas and Concepts:</h3>
<u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Chemistry</u>
<u>Atomic Structure</u>
<u>Stoichiometry</u>
- Using Dimensional Analysis
<h3>
Explanation:</h3>
<u>Step 1: Define</u>
3.40 g Zn
<u>Step 2: Identify Conversions</u>
Molar Mass of Zn - 65.39 g/mol
<u>Step 3: Convert</u>
- Set up:
- Divide:
<u>Step 4: Check</u>
<em>Follow sig fig rules and round. We are given 3 sig figs.</em>
0.051996 mol Zn ≈ 0.0520 mol Zn
Answer:
c molecules bkah blah blah
Explanation:
im smart
Answer:
126g
Explanation:
Data obtained from the question include:
Mole of Fe = 2.5moles
Molar Mass of Fe = 56g/mol
Mass of Fe =?
Number of mole = Mass/Molar Mass
Mass = number of mole x molar Mass
Mass of Fe = 2.25 x 56
Mass of Fe = 126g
Therefore, the mass in 2.25mol of Fe is 126g