Answer: Cations (positively-charged ions) and anions (negatively-charged ions) are formed when a metal loses electrons, and a nonmetal gains those electrons. The electrostatic attraction between the positives and negatives brings the particles together and creates an ionic compound, such as sodium chloride.
<span>The correct answer among the choices given is option A. Elements are
distinguished from compounds. An element is a pure chemical substance which is
from a same atom while compounds are from different elements. It contains atoms
of different elements.</span>
Kw = 1.219x10⁻¹⁴
kw = [H⁺] x [OH⁻]
in water [H⁺] = [OH⁻] therefore:
[H⁺] = √ kw
[H⁺] = √ <span>1.219x10⁻¹⁴
[H</span>⁺] = 1.104x10⁻⁷
pH = - log [H⁺]
pH = - log [ <span>1.104x10⁻⁷ ]
pH = 6.95
hope this helps!</span>
Answer:
D
Explanation:
The amount increased to a certain point then decreased
Fission and fusion Releases the most energy
