2 atoms of Al
3 of S
4*3=12 of O
so total= 17
Answer: D) They share electrons
Explanation: Nonmetals under goes a bond called covalent bond. The chemical bond that requires the sharing of electron pairs is known as covalent bond. This bond is of three types namely; polar covalent, non polar covalent, and coordinate covalent.
It's is very difficult for an electron to be removed from nonmetals, that is, they exhibit high ionization energy.
So because of this characteristics, when two nonmetals bond, they share electrons instead of transferring electron.
<h2>Double displacement reaction:</h2>
A double displacement reaction is a type of chemical reaction where two compounds react, and positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.
<h3>For example:</h3>
Na2S+2HCl→2NaCl+H2S
hope it's helpful :)
Answer:
Number of produced moles of carbondioxide is 0.113 mol.
Explanation:
Excess of sulphuric acid is present.And the sodium carbonate is completely consumed.
Molar mass of sodium carbonate = 105.99g/mol
Given mass of sodium carbonate =12 g/mol
one mole of sodium carbonate produce one mole of carbondioxide.
0.113 mole of sodium carbonate produce 0.113 mole of carbondioxide.
Therefore, 0.113 mol of carbondioxide produced in flask 7.
Answer:
Because they do not naturally react with other elements
Explanation:
Since noble gases do have a fulfilled valence shell, they do not react with other elements because they're already stable by the themselves.