Explanation:
gravity if it's incorrect sorry
NaPO4 + KOH -> KPO4 + NaOH
already balance
1) convert cm to m

2) sig figs
When making a bigger number smaller, the exponent will be a positive number.
The answer will be
×
meters after rounding
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.