Answer:
Helium, Krypton, Neon, Argon, Radon, Oganesson and Xenon.
Explanation:
A theory fits all three of these descriptions. you can test, predict, and prove or disprove a theory. hope this helps!
Answer:
25.6 %.
Explanation:
- To calculate the % of Cl in KClO₄:
<em>% Cl = [Atomic mass of (Cl)/molar mass of KClO₄] x 100</em> = [(35.5 g/mol)/(138.55 g/mol)] x 100 = <em>25.62 % ≅ 25.6 %.</em>
