According to the concept of Avogadro's number there are 6.023×10²³ elementary entities in an element which when multiplied by atomic mass gives the mass of 1 mole of an element.
Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.
It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .
According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.
Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number.
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Show what the following molar ratios should be.
a. C4H10 / O2 2:13 (example) b. O2 / CO2
c. O2 / H2O
d. C4H10 / CO2
e. C4H10 / H2O
also give an explanation
Answer:
a. C₄H₁₀/O₂ = 2:13 (example)
b. O₂/CO₂ = 13:8
c. O₂/H₂O = 13:10
d. C₄H₁₀/CO₂ = 2:8
e. C₄H₁₀/H₂O = 2:10
Explanation:
2C₄H₁₀ + 13O₂ ⟶ 8CO₂ + 10H₂O
The molar ratios are the same as the coefficients in front of the formulas.
The amount of space between particles and their arrangement play a significant role in determining the state of matter—solid, liquid, or gas—and this relationship is closely linked to concepts of density, intermolecular forces, temperature, and pressure.
The relationship between the amount of space between particles and the state of matter is closely tied to the concepts of density and the arrangement of particles. The three primary states of matter are solid, liquid, and gas, and they exhibit different levels of particle spacing and arrangement:
Solid State: In a solid, particles are closely packed together in an ordered and fixed arrangement. The amount of space between particles is minimal, and they vibrate in place around fixed positions. Solids have a definite shape and volume due to the strong intermolecular forces that hold the particles together.
Liquid State: In a liquid, particles are still closely packed, but they have more freedom of movement compared to a solid. The intermolecular forces are weaker, allowing the particles to flow and move around one another. The amount of space between particles is larger than in a solid.
Gas State: In a gas, particles are widely spaced and move independently at high speeds. The amount of space between gas particles is much larger than in solids and liquids. Gases have neither a definite shape nor a definite volume, as they expand to fill the entire volume of their container.
This relationship between particle spacing and state of matter is described by the concept of density. Density is the mass of the substance per unit of the volume. Solids tend to have higher densities because their particles are densely packed, while liquids have lower densities due to the increased particle spacing.
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Answer:
As the space changes between the particles, so does the state of matter. When the temperature of a solid is raised, the particles become more energetic, and they move farther and farther apart.
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Answer:
Noble Gases
Explanation:
They all have complete outer shells. They're also on column 18 :)