Write the Ground state electron configuration of Ca using the noble-gas shorthand notation
1 answer:
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Ions are electrically charged particles, meaning, that whenever any type of atom loses or gains electrons it is forming a new type of structure, or ion.
Metal atoms form postive ions, Non-Metals form negative ions.
The strongest type of bond that can occur between two ions, when they are oppositely charged, are Ionic Bonds. The most commonly known ionic bond is seen in Sodium and Chlorine, which when combined give us NaCl or Sodium Chlorine, aka Salt.
+1 charge = Group 1, Metals
+2 charge = Group 2, Alkali Metals
-1 charge = Group 17, Halogens
Provided is a periodic table marked with the charges for each group.
Answer : The mass percent of ethanol is, 10.38 % and the molality of ethanol is, 2.52 mole/kg
Explanation :
In wine, the solute and solvent are ethanol and water respectively.
Given :
12.8 % ethanol by volume means 12.8 mL ethanol present in 100 mL solution.
Volume of ethanol = 12.8 mL
Volume of solution = 100 mL
Volume of water = 100 - 12.8 = 87.2 mL
Density of ethanol =
Density of water = 1 g/mL
Now we have to calculate the mass of ethanol and water.
and,
Now we have to calculate the total mass of 100 mL of wine.
Total mass of 100 mL of wine = 10.1 + 87.2 = 97.3 g
Now we have to calculate the mass percent of ethanol.
The mass percent of ethanol is, 10.38 %
Now we have to calculate the molality.
Molar mass of ethanol = 46 g/mole
The molality of ethanol is, 2.52 mole/kg