The logarithmic scale of pH means that as pH increases, the H+ concentration will decrease by a power of 10. Thus at a pH of 0, H+ has a concentration of 1 M. At a pH of 7, this decreases to 0.0000001 M. At a pH of 14, there is only 0.00000000000001 M H+.
HSA distributions. The IRS requires you to prepare Form 8889 and attach it to your tax return when you take a distribution from an HSA. However, if your 1099-SA indicates you did not use the distribution for qualified medical expenses, you will pay income tax on the portion you used for unqualified expenses.
You'll find the correct amount on your W-2 form (box 12, code W). You should also have received a Form 1099-SA from your HSA administrator reporting withdrawals from the account. You need to report those distributions on Form 8889 and indicate which were for eligible medical expenses and which were not. Ineligible payouts are taxable, and you need to report them on line 21 of Form 1040.