The answer is 4 (four).
Hope this helps!!! :)
Answer:
0.72
Explanation:
if 760=1
550=x
=550÷760= 0.72 in two s.f
What you were given is the balanced chemical equation
In an aqueous solution, the hydronium ion concentration is equivalent to the hydrogen ion concentration because the hydrogen ion exists as the hydronium ion. The pH of pure water is 7, and:
pH = -log[H+]
7 = -log[H+]
[H+] = 1 x 10⁻⁷
Therefore, the hydronium ion concentration in pure water is also 1 x 10⁻⁷.
