Answer:
Convert the mass of each element to moles using the molar mass from the periodic table. Divide each mole value by the smallest number of moles calculated. Round to the nearest whole number. This is the mole ratio of the elements and is represented by subscripts in the empirical formula.
Explanation:
The result is the molecular formula
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stable arrangement
<h3 /><h3>What is electron configuration of ions?</h3>
Their valence shell contains two or eight electrons. They don't acquire, shed, or distribute electrons.
An atom with a full outermost (valence) shell has a stable electrical configuration. The quantity of electrons that leave or enter an atom's outer shell is known as its valency.
A noble gas configuration is a stable electron configuration for representative or main group elements. By acquiring or losing electrons and forming ions, or by sharing electrons with other atoms, the representative elements' atoms can adopt a noble gas structure.
The stability of an electron arrangement can be predicted. When all of an atom's orbitals are filled, it is at its most stable and unreactive. The combinations with full energy levels are the most stable.
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Answer:
Mass = 2.16 g
Explanation:
Given data:
Number of molecules of F₂ = 3.45 × 10²²
Mass in gram = ?
Solution:
Avogadro number:
The given problem will solve by using Avogadro number.
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.
1 mole = 6.022 × 10²³ molecules
3.45 × 10²² molecules ×1 mol / 6.022 × 10²³ molecules
0.57× 10⁻¹ mol
0.057 mol
Mass in gram :
Mass = number of moles × molar mass
Mass = 0.057 mol × 37.9 g/mol
Mass = 2.16 g
Moles of NH3 = mass of NH3/molecular mass of NH3 = 1.7/17= O.1 MOLES.