Answer:
3.384364 time 10^24 atoms
Explanation:
multiply by avogadro's number
Answer:
Add copper (II) oxide (insoluble base), a little at a time to the warm dilute sulfuric acid and stir until the copper (II) oxide is in excess (stops disappearing) Filter the mixture into an evaporating basin to remove the excess copper (II) oxide. Leave the filtrate in a warm place to dry and crystallize.
Answer:
(C)
Explanation:
Because of the physics of it.
Answer is: <span>1.0 mol X left over.
</span>Chemical reaction: X + 2Y → XY₂.
n(X) = 3,0 mol, excess reactant.
n(Y) = 4,0 mol, limiting reagent.
n - amount of substance.
from reaction: n(X) : n(Y) = 1 : 2.
n(X) : 4 mol = 1 : 2.
n(X) = 2 mol, that reacts.
excess of X: 3 mol - 2 mol = 1 mol.
3 reasons why noble gases cannot bond with other atoms:
1.) Already has their full outer shell (8 valence electrons)
2.) Lack of reactivity
3.) Stable
HOPE THIS HELPS! ^_^
