Se tiene 300 ml de una solución a pH 3,6 constituido por 0,012 mol de acido debil (Ka= 4,5 x 10-4) y 0,023 mol de base o sal conjugada. Si se le agrega 0,12 mol de un ácido fuerte, su valor de pH es:

Can someone me with 6 to 10 plz this is for masteries test.

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules