New year and new things--debate starts June 4 and June 6

Debate 4-6 pm Monday and Wednesday

new things

any new things

New school year

Welcome to PHS--hope you have a good time here

school year 2017--News

 Summer is the time to relax and get refreshed so Mr Gary went and played an ITF--International Tennis Federation tournament in Greta Farms, Pattaya.  It was a Grade 3--the tournaments are graded 1-5 with 1 being the highest, grade 3 is middle.  He won with his partner, Mr. Daniel.

This year we hope to play more tournaments and win. Mr. Gary will continue to do debate club along with Mr. Chad and Mr. LP.  He will also teach M1 and M2 science this year, as of April 16.  It may change.  But looking forward to a new year of adventure.

New Year 2017 teaching M1 add math/m2 add sci

A new year begins with classes in M1 Add Math and M2 Add Sci.  I asked to teach M1 to get more debaters for next year, but this year our school has three sections of M1 and M2--thus after hiring more upper Bio and Chem teachers--The G has moved down to lower school.

ASDC high lights--a traditionally difficult tournament--with National teams from various countries--older kids also, we took

Silom Team Tennis: G/Nok vs Wat/Ying pt 2 2017

PHS M5 hw 2/10/17

1. The concentration of either the H⁺ ion or the OH⁻ ion is given for four aqueous solutions at 298 K. For each solution, calculate [H⁺] or [OH⁻]. State whether the solution is acidic, basic, or neutral.

a. [H⁺] = 1.0 × 10⁻¹³M

b. [OH⁻] = 1.0 × 10⁻⁷M

c. [OH⁻] = 1.0 × 10⁻³M

d. [H⁺] = 4.0 × 10⁻⁵M

2. Challenge Calculate the number of H⁺ ions and the number of OH⁻ ions in 300 mL of pure water at 298 K.

 READING CHECK Explain why you cannot obtain the [H⁺] directly from the molarity of a weak acid solution.

1. Calculate the pH of solutions having the following ion concentrations at 298 K.

a. [H⁺] = 1.0 × 10⁻²M

b. [H⁺] = 3.0 × 10⁻⁶M

2. Calculate the pH of aqueous solutions with the following [H⁺] at 298 K.

a. [H⁺] = 0.0055M

b. [H⁺] = 0.000084M

3. Challenge Calculate the pH of a solution having [OH⁻] = 8.2 × 10⁻⁶M.