Question

calculate number of molecules in 0.1 mole of water

Answer 1

Answer:

Explanation:

the number of molecules in 0.1mol is as follows.....

0.1*6.022*10^23

= 6.022*10^22

A mole of a substance is the same number of molecules of that substance as there are carbon-12 atoms in precisely 12 g of the element. This means that the molecular weight of any material, stated in atomic mass units, is equal to its weight, in grammes.

Even while we are aware that this number, known as Avogadro's number, has the sign N and is 6.022 X 1023, it is not necessary to know what it is. Scaling up from molecules to moles requires an increase in size of 6.022 X 1023. The conversion factor between grammes of mass and atomic mass units is Avogadro's number: 1 g = 6.022 X 1023 amu.For more information :

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Answer 2

the number of molecules in 0.1 moles is as follows.....

=$0.1*6.022*10^{23}$

= $6.022*10^{22}$

A mole is related to the mass of an element in the following way: one mole of 12 carbon atoms has $6.02214076 * 10^{23}$ atoms and a mass of 12 grams. By comparison, one mole of oxygen contains, by definition, the same number of atoms as carbon-12, but has a mass of $15.999$ grams. Therefore, oxygen has a greater mass than carbon. This consideration can also be applied to molecular weights or formula weights.

A mole of a substance is the same number of molecules of this substance as there are carbon 12 atoms in exactly 12 g of the element. This means that the molecular weight of any material, given in atomic weight units, is equal to its weight in grams.

Although we know that this number, known as Avogadro's number, has the sign N and is $6.022 * 10^{23}$, it is not necessary to know what it is. Converting from molecules to moles requires magnification $6.022 * 10^{23}$. The conversion factor between grams of mass and atomic mass units is Avogadro's number: 1 g = $6.022 * 10^{23}$ amu.

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