The balanced chemical equation for the combustion of octane is 2 C8H18 + 25 O2 → 16 CO2 + 18 H2O. From the stoichiometry of the reaction, 3.50 mol of CO2 will need approximately 50g of octane.
The combustion of octane (C8H18) in the presence of oxygen (O2) produces carbon dioxide (CO2) and water (H2O). The balanced chemical equation for this reaction is: 2 C8H18 + 25 O2 → 16 CO2 + 18 H2O.
To calculate the mass of octane needed to release 3.50 mol CO2, we need to understand the stoichiometry of the reaction. From the balanced equation, we can see that 16 mol of CO2 is produced from 2 mol of C8H18. So, 1 mol of C8H18 produces 8 mol of CO2.
Therefore, to produce 3.50 mol of CO2, we would need 3.50/8 = 0.4375 mol of C8H18. The molar mass of octane is approximately 114 g/mol, so the required mass would be 0.4375mol x 114g/mol = approximately 50g.
#SPJ12
The combustion of octane produces carbon dioxide and water, as described by the balanced chemical equation C8H18 + 12.5O2 → 8CO2 + 9H2O. To produce 3.50 mol of CO2, approximately 50g of octane is needed.
The combustion of octane (C8H18) in the presence of oxygen (O2) produces carbon dioxide (CO2) and water (H2O). The balanced chemical equation for this reaction is: C8H18 + 12.5O2 → 8CO2 + 9H2O.
Considering the stoichiometry of the reaction, we can see that 1 mol of octane produces 8 moles of CO2. Therefore, to produce 3.50 mol of CO2, the amount of octane required would be 3.50/8 = 0.4375 mol. Converting this to mass using the molar mass of octane (114.22 g/mol), we get 0.4375 mol * 114.22 g/mol ≈ 50 g. Thus, approximately 50g of octane is needed to produce 3.50 mol of CO2.
#SPJ6
Answer :
As we know that there are two types of solids.
(1) Amorphous Solids
(2) Crystalline Solids
Amorphous Solids : It is a type of solids in which the constituent particles of the matter are arranged in the random manner.
That means there is no proper arrangement of atoms in solid lattice but the atoms or molecules are closely spaced that means they can move freely from one place to another.
The examples of amorphous solid are, plastics, glass, rubber, metallic glass, polymers, gel, fused silica, pitch tar, thin film lubricants, wax.
Crystalline Solids : It is a type of solids where the constituent particles of the matter are arranged in the specific manner.
That means there is a proper arrangement of atoms in solid lattice. They do not have space between the molecules or atoms and they can not move freely from one place to another.
The examples of crystalline solids are, quartz, calcite, sugar, mica, diamonds, snowflakes, rock, calcium fluoride, silicon dioxide, alum.
Explanation:
A mid-ocean ridge is a geological feature that records several important aspects of Earth's history and processes:
1. **Seafloor Spreading:** Mid-ocean ridges are where tectonic plates are moving apart. As new oceanic crust forms at these ridges through volcanic activity, it records the process of seafloor spreading. This process is a key component of plate tectonics, which explains the movement of Earth's lithospheric plates.
2. **Magnetic Reversals:** The seafloor at mid-ocean ridges contains bands of magnetic minerals that align with the Earth's magnetic field at the time the rock solidified. These bands provide a record of past magnetic field reversals, which is essential for understanding Earth's magnetic history.
3. **Geological History:** The rocks and formations found along mid-ocean ridges contain valuable information about the geological history of the ocean floor. This includes details about the composition of the Earth's crust and the minerals present in the oceanic lithosphere.
4. **Evidence of Hydrothermal Activity:** Mid-ocean ridges often host hydrothermal vent systems, where superheated water emerges from the seafloor. These vent systems record evidence of extreme environments and unique ecosystems that thrive in these conditions.
In summary, mid-ocean ridges record information about plate tectonics, magnetic field reversals, geological history, and hydrothermal activity, making them crucial sites for understanding Earth's dynamic processes and history.
Answer:
Se + 2e- => Se-2
Explanation:
Ions are electrically charged particles, formed due to the gain or loss of electrons by an atom.
There are two types of ions cations and anions. An element that loses their electrons and forms positive ions are cations while metals and element that gains one or more electrons and forms negative ions are anions.
Selenium is an atom with atomic number 34 and represented as Se. The electronic configuration of Se is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4. Selenium will gain 2 more electrons to complete it p orbital and form an ion Se-2.
The equation is as below:
Se + 2e- => Se-2