Calculate the [H3O+] of each aqueous solution with the following
[OH−] . Express your answer using two significant figures.
1.Vinegar, 1.2 x 10-11M, Express your answer using
two significant figures.
2. Urine, 2.3x10-9 M, Express your answer using two
significant figures.
3. Ammonia, 5.8×10−3 M, Express your answer using two
significant figures.
4. NaOH, 4.0×10−2 M, Express your answer using two
significant figures.