What is the hydronium ion (H30+) concentration in milk if it has a ph of 8.2

Step-by-step explanation:

as the hydronium ion is H30+ which shows that its conc will be euql to the h+ ion conc

so:ph=-log(H+)

(H+) = 10^(8.2)

Therefore H+ is 6.31x10-9 mole/dm³

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.