Chemistry, 11.12.2019 00:31 brendahndz8676

what is avogadro's number, and why is it useful? (3 points)

a. 2.033 x 1023; it is a conversion factor between moles and number of particles

b. 2.033 x 1023; it is a conversion factor between moles and mass

c. 6.022 x 1023; it is a conversion factor between moles and mass

d. 6.022 x 1023; it is a conversion factor between moles and number of particles

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Answer from: aashya16

6.022 x 10²³; it is a conversion factor between moles and number of particles

Explanation:

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole of hydrogen = 6.022 × 10²³ atoms of hydrogen

238 g of uranium = 1 mole of uranium = 6.022 × 10²³ atoms of uranium

By taking ions:

62 g of NO⁻₃ = 1 mole of NO⁻₃ = 6.022 × 10²³ ions of NO⁻₃

96 g of SO₄²⁻ = 1 mole of SO₄²⁻ = 6.022 × 10²³ ions of SO₄²⁻

Answer from: thaemysha

The Avogadro number has been $\rm 6.023\;\times\;10^2^3$ . It acts as a conversion factor between moles and the number of particles. Thus option D is correct.

Avogadro's number has been the constant value that gives the value of the number of atoms of a molecule in 1 mole of the sample.

The Avogadro number has been the proportionality constant and has been named after Sir Amedeo Avogadro. The numerical value that describes the value of the Avogadro number has been known as the Avogadro number or Avogadro constant. The value of the Avogadro constant has been $\rm 6.023\;\times\;10^2^3$ .

In the mole concept, the value of the Avogadro number gives information about the number of atoms in a mole of the sample. Thus it acts as a conversion factor between moles and the number of particles.

Thus, the Avogadro number has been $\rm 6.023\;\times\;10^2^3$ . It acts as a conversion factor between moles and the number of particles. Thus option D is correct.

For more information about the Avogadro's number, refer to the link:

link

Answer from: Quest

it would be d. henry moseley

hope this !

and sorry if i'm late. have a good rest of your day! : d

Answer from: Quest

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.

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what is avogadro's number, and why is it useful? (3 points)

a. 2.033 x 1023; it is a co...

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