Hydrogen and helium because they only have one electron shell and it only holds up to two electrons in it.
Answer:
<h3>homeostasis</h3>
•the maintenance of a stable internal environment
<u><em>Hope </em><em>this</em><em> helps</em><em> </em><em>:</em><em>)</em></u>
I think so... I'm currently learning this too but you should be correct
Answer:
525.1 g of BaSO₄ are produced.
Explanation:
The reaction of precipitation is:
Na₂SO₄ (aq) + BaCl₂ (aq) → BaSO₄ (s) ↓ + 2NaCl (aq)
Ratio is 1:1. So 1 mol of sodium sulfate can make precipitate 1 mol of barium sulfate.
The excersise determines that the excess is the BaCl₂.
After the reaction goes complete and, at 100 % yield reaction, 2.25 moles of BaSO₄ are produced.
We convert the moles to mass: 2.25 mol . 233.38 g/mol = 525.1 g
The precipitation's equilibrium is:
SO₄⁻² (aq) + Ba²⁺ (aq) ⇄ BaSO₄ (s) ↓ Kps
It’s the first 1 M yea it’s the first one
