The equation below shows the incomplete combustion of ethene.C2H4 + O2 → CO2 + H2O
If 2.70 mol C2H4 is reacted with 6.30 mol O2 identify the limiting reagent
Answers
The limiting reagent is O₂.
Firstly, write the balanced chemical equation:
C₂H₄ + O₂ → CO₂ + H₂O
Then, we need to write the mole ratio of the reactants
The theoretical mole ratio is given by the coefficients of the balanced chemical equation: 3 moles of O₂ react with 1 mol of C₂H₄
Now, let's write the mole ratio of the substances available
≈
We concluded that,
Since, the ratio of the O₂ to C₂H₄ available is less than the theoretical ratio of O₂ needed to react with C₂H₄, the former is not enough: it will be consumed before the other reagent and it is the limiting reactant.
Hence, the limiting reagent is O₂.
Learn more:
Answer:
- The limiting reagent is O₂.
Explanation:
1. Write the balanced molecular equation:
2. Write the mole ratio of the reactants
The theoretical mole ratio is given by the coefficients of the balanced molecula equation: 3 moles of O₂ react with 1 mol of C₂H₄
3. Write the mole ratio of the substances available
4. Conclusion
Since the ratio of the O₂ to C₂H₄ available is less than the theoretical ratio of O₂ needed to react with C₂H₄, the former is not enough: it will be consumed before the other reagent and it is the limiting reactant.
Hence, the limiting reagent is O₂.
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Answer:
- The changed force of attraction between the two objects is 625 N.
Explanation:
The universal law of attraction states that the gravitational attraction between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
The mathematical expression is:
- F = G m₁ m₂ / d², where
- G is the gravitational constant,
- m₁ and m₂ are the respctive masses of the two objects, and
- d = distance between the two objects.
Then, if the masses m₁ and m₂ remain unchanged and the distance (on the denominator) is reduced by a factor of 5, the 1/d² = 1/(1/5)² = 5² = 25, which means that the force will be multiplied by 25.
So, 25 N × 25 = 625 N which is the changed force of attraction between them.
Answer:
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Explanation:
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Answer: Physical property
Explanation: length and dimensions are under physical properties of matter.
Answers
Answer:
The number of atom is 3.67*10^24 atoms
Explanation:
Molar mass of methane CH4 is 16.0g/mol
Using this to divide the mass
24.4g/16.0 = 1.525mol
1 mol CH4 contains 1 mol of Carbon C and 4 mol of hydrogen H, so 1.525mol contains 4(1.525)=6.1 molH
Using avogadro number : (6.1mol)(6.02*10^23)
= 3.67*10^24 atoms
Final answer:
There are 3.66 × 10^24 hydrogen atoms in 24.4 g of methane (CH4). This is calculated by first finding the number of moles of CH4 and then using Avogadro's number to determine the total number of molecules, which is finally multiplied by 4 (the number of hydrogen atoms per CH4 molecule).
Explanation:
The question asks how many atoms of hydrogen are in 24.4 g of methane (CH4). Methane has a molecular formula of CH4, indicating that each molecule contains 4 hydrogen atoms. The molar mass of methane is 16.04 g/mol (12.01 g for carbon + 4 × 1.008 g for hydrogen).
First, calculate the number of moles of methane:
24.4 g CH4 × (1 mol CH4 / 16.04 g CH4) = 1.52 mol CH4
Then, multiply by Avogadro's number to find the total number of methane molecules:
1.52 mol CH4 × (6.022 × 1023 molecules/mol) = 9.15 × 1023 molecules of CH4
Since each molecule of methane has 4 hydrogen atoms, we get:
9.15 × 1023 molecules CH4 × (4 H atoms/molecule) = 3.66 × 1024 hydrogen atoms.