Number of atoms are present in 35.8 grams of sodium : 9.373.10²³
Further explanation
Atoms are composed of 3 types of basic particles namely protons, electrons, and neutrons
the mass of this basic particle is expressed in atomic mass units (amu)
This atomic unit uses the standard atomic mass, that is, the C-12 isotope
1 atom C-12 = 12 atomic mass units
1 atomic mass unit = 1/12 x mass 1 C-12 atom
Mole itself is the number of particles contained in a substance
1 mole = 6.02.10²³ particles
Mole can be determined if the amount of substance mass and its molar mass is known
[tex]\large {\boxed {\boxed {\bold {mole = \dfrac {mass} {molar \: mass}}}}[/tex]
Sodium(Na) is an element in group 1A and in period 3 with atomic number 11 with atomic mass (Ar) = 23
35.8 grams of sodium
then the mole of Sodium:
[tex]\rm mole=\dfrac{35.8}{23}\\\\mole=\boxed{1,557}}[/tex]
so the number of atoms:
[tex]=1,557\times 6.02.10^{23}\\\\=9.373.10^{23}[/tex]
Learn more
the mole fractions of the solute and the solvent
https://brainly.ph/question/2062141
moles of CaCO3
https://brainly.ph/question/2356002
the mole ratio of Al to Cl2
https://brainly.ph/question/2124499
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