Answer:
The correct formula for tetraphosphorous octaoxide is P₂O₅
1 mol Au ---------------- 196.9665 g
0.150 mol Au ----------- ?
0.150 x 196.9665 / 1
= 29.54 g
hope this helps!
I am pretty sure that the answer is A, because the element's atomic number is how many protons, maybe the neutrons, it has in it and all elements need 18 protons to make it stable. So the answer is A.
Hope that helps.
Water molecules are made of hydrogen atoms and one oxygen atom.
Hope this helped!
Question 2: AuN3
question 3: NiBr3
question 4: CrP2