problem

• I am from India 
• I am having problem regarding explanation videos ,actually I was having a small doubt in chemistry regarding gravimetric analysis ,I came to search in khan academy ,but I didnt find any explanation video regarding that topic ,SO I AM FACING A LOT OF PROBLEM WITH IT 
•  SO PLEASE SOLVE MY PROBLEM ,I HOPE THAT U WILL SOLVE MY PROBLEM 

                                              FROM

                                                  GUNDA SAI SATHVIK