<h3>
Answer:</h3>
2265 g Fe₃O₄
<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>
[RxN - Balanced] Fe₃O₄ + 4H₂ → 3Fe + 4H₂O
[Given] 705.0 g H₂O
<u>Step 2: Identify Conversions</u>
[RxN] 4 mol H₂O → 1 mol Fe₃O₄
Molar Mass of H - 1.01 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of Fe - 55.85 g/mol
Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol
Molar Mass of Fe₃O₄ - 3(55.85) + 4(16.00) = 231.55 g/mol
<u>Step 3: Convert</u>
- Set up stoich:
![\displaystyle 705.0 \ g \ H_2O(\frac{1 \ mol \ H_2O}{18.02 \ g \ H_2O})(\frac{1 \ mol \ Fe_3O_4}{4 \ mol \ H_2O})(\frac{231.55 \ g \ Fe_3O_4}{1 \ mol \ Fe_3O_4})](https://tex.z-dn.net/?f=%5Cdisplaystyle%20705.0%20%5C%20g%20%5C%20H_2O%28%5Cfrac%7B1%20%5C%20mol%20%5C%20H_2O%7D%7B18.02%20%5C%20g%20%5C%20H_2O%7D%29%28%5Cfrac%7B1%20%5C%20mol%20%5C%20Fe_3O_4%7D%7B4%20%5C%20mol%20%5C%20H_2O%7D%29%28%5Cfrac%7B231.55%20%5C%20g%20%5C%20Fe_3O_4%7D%7B1%20%5C%20mol%20%5C%20Fe_3O_4%7D%29)
- Multiply/Divide/Cancel units:
![\displaystyle 2264.74 \ g \ Fe_3O_4](https://tex.z-dn.net/?f=%5Cdisplaystyle%202264.74%20%5C%20g%20%5C%20Fe_3O_4)
<u>Step 4: Check</u>
<em>Follow sig fig rules and round. We are given 4 sig figs.</em>
2264.74 g Fe₃O₄ ≈ 2265 g Fe₃O₄
Answer:
It is the last one.
Explanation:
Water molecules are polar, they have cohesive properties, and water is less dense when it is solid than when it is a liquid, that is why ice floats in liquid water. However, water is a very good solvent, it can dissolve many solids, including sugar, salt, and other hydrophilic substances.
Answer:
1.17 L
Explanation:
Step 1: Given data
- Initial volume (V₁): 1.50 L
- Initial pressure (P₁): 1.10 atm
- Initial temperature (T₁): 25 °C
- Final pressure (P₂): 1.50 atm
- Final temperature (T₂): 45 °C
Step 2: Convert the temperatures to the Kelvin scale
We will use the following expression.
K = °C + 273.15
K = 25°C + 273.15 = 298 K
K = 45°C + 273.15 = 318 K
Step 3: Calculate the final volume of the neon gas
If we assume ideal behavior, we can calculate the final volume of the neon gas using the combined gas law.
P₁ × V₁ / T₁ = P₂ × V₂ / T₂
V₂ = P₁ × V₁ × T₂ / T₁ × P₂
V₂ = 1.10 atm × 1.50 L × 318 K / 298 K × 1.50 atm = 1.17 L
Answer:
drive an electric car to work, walk to work, carpool to work
Explanation:
The orders of the activities from the greatest to least impact to reduce consumption of fossil fuels, is one in which the least fossil fuel is used;
- The goal of driving an electric car is to reduce dependence on fossil fuels.
- Electric cars prides as an automobile system with no carbon emission nor usage.
- Walking to work does not require carbon consumption too.
- Carpool involves use of fossil fuels.
Answer:
C₄H₁₂ + 7O₂ --> 4CO₂ + 6H₂O
Explanation:
Organic molecules react with O2 to create water and CO2 in combustion processes. C4H12 is an organic molecule that combines with O2 to create water and CO2 as shown in the reactions.
As a result, this is the sole reaction that obeys the general combustion equation.