Answer: 121.95587 g/mol
Explanation:
- The atomic mass of aluminum is 26.98154 g/mol.
- The atomic mass of phosphorous is 30.97673 g/mol.
- The atomic mass of oxygen is 15.9994 g/mol.
Therefore, the molecular mass is:
![26.98154 +30.97673 +4(15.9994)=\boxed{121.95587 \text{ g/mol}}](https://tex.z-dn.net/?f=26.98154%20%2B30.97673%20%2B4%2815.9994%29%3D%5Cboxed%7B121.95587%20%5Ctext%7B%20g%2Fmol%7D%7D)
It is known that at if a gas is identified to be as ideal
gas then, at STP, the volume of 1 mole of that gas is equal to 22.4 L. Using
this fact and the given volume in this item, we determine the number of moles
as that below.
n =
(11.2 L of argon)(1 mol argon / 22.4 L of argon)
<span> n =
0.5 moles</span>
<span>Answer: 0.5 moles </span>
The periods inside the Periodic Table is B. a horizontal row, and is numbered 1 through 7
hope this helps
NaOH, is not an element, but a compund. Meaning it's chemically bonded. Na is sodium, O is oxygen and H is hydrogen.
Sodium is a metal, Oxygen is a non-metal and hydrogen is also not a metal.
Meaning that this is an Ionic compound. Hope this helps.