Katerina K.

Huong's school is selling tickets to a fall musical. On the first day of ticket sales the school sold 13 senior citizen tickets and 7 child tickets for a total of $171. The school took in $188 on... more

Be sure to specify states such as (aq) or (s).

A farmer has been using calcium for decades to help maintain chemical balance in the soil used to grow his crops. Unfortunately, the farmer's calcium supplier has been steadily increasing the price... more

Which of the following statements is false about the silicon atom represented below.  The atom contains 14 protons. The atom contains 14 protons. The atom contains 14 neutrons. The atom contains 14... more

Calculate the pH of a solution that is: 2.8×10−2 M in HCl.Please help solve

Calculate [H3O+] for a solution of hydrochloric acid for which pH = 3.10.Enter your answer in scientific notation. Be sure to answer all parts.

Be sure to answer all parts.The hydronium ion concentration in blood of three different patients was:Patient [H30+]A 3.15 x 10 - 8B 1.26 x 10 - 8C 3.97 x 10 - 8What is the pH of each patient's... more

A saturated solution of milk of magnesia Mg(OH)2 , has a pH of 10.5. What is the hydronium ion concentration of the solution? Is the solution acidic or basic?Concentration =____  MThe solution is_____ more