Dont smoke it... This will happen.
To get the number of formula units of the compound, potassium hydroxide (KOH), we must recall that for every mole of ionic compound, the number of fomula units is 6.022 *10^23 units, or the avogadro's number. Hence, for a 6.89 mol compound, the number of formula units is 4.1498 *10^24 units. Answer is A.
I believe the correct answer would be the third option. It is the burette that is the apparatus that is used in titration. It is the best apparatus to use since you can easily control the amount you add to the sample solution. Also, you can easily read off the volume that was added.
Answer:
The answer to your question is:
Explanation:
1) Increasing atomic radius:
Oxygen 74
Aluminum 143
Potasium 227
2) Increasing electronegativity
Neon -
Aluminum 1.61
Sulfur 2.58
Oxygen 3.44
3.-
Electronegativity: is the measure of the tendency of an atom to attract a pair of electrons.
Ionization energy: is the quantity of energy that an isolated, gaseous atom must absorb to discharged an electron, resulting in a cation.
4.-
Atomic radius increases as we move down on the periodic table.
Atomic radius is the distance from the center of a nucleus to the outer most shell containing electrons.
5.-
Sulfur = 1s² 2s² 2p⁶ 3s² 3p⁴
Neon = 1s² 2s² 2p⁶