Applied forces/or unbalanced:i hope that helps you
<span>Ionization energy (IE) is the amount of energy required to remove an electron.
If you observe the IEs sequentially, there is a large gap between the 2nd and 3rd. This suggests it is difficult to remove more than 2 two electrons. Elements that lose two electrons to become more stable are found in the Group 2A (2 representing the number of electrons in the outermost valence shell).</span>
Answer:
3 atoms of O
8.57g
Explanation:
The problem here is to find the mass of oxygen in the compound and the number of atoms of oxygen.
The formula of the compound is:
NaHCO₃;
Here we have:
1 atom of Na
1 atom of H
1 atom of C
3 atoms of O
So there are 3 atoms of O
To find the mass of oxygen , we use the molar mass of oxygen;
Molar mass of oxygen = 16g/mol
Mass of oxygen = 
x 15 = 8.57g
<span>The answer to this question would be: a double replacement reaction
In double replacement reaction or metathesis, the reaction will result in two new compound. The cation from the molecule reaction is switching with the cation from other molecules.
In contrast to the double replacement reaction, in single replacement reaction the molecule made in just one. In this case, the compound is just swapping its molecule with a more reactive one, results in a more stable compound.</span>
Where else but from the surroundings?
