The yield of a reaction is the final product. It is necessary to find the percent yield of a reaction since the efficiency of the reaction can be determined.
Percent yield is defined as the percent ratio of experimental yield by the theoretical yield. The equation used to calculate this quantity is given by:
This is necessary because during a reaction, many by-products are formed along with the required product. So, to judge the product we require this. This is very important in the synthesis of the product. This is also used to detect if there is any impurity in the product or not.
Like, if the percent yield is more than 100%, it means that the product carry some impurity in it and it has to be removed. This is also used to know that if all the reactants have reacted together or not.
A lab station usually contains equipment for the people working at the station to use. However, most rooms will only have one fire extinguisher for the whole room meaning it would most likely be located somewhere that is easy to access by all and not just a singular lab station.
From the equation above the reacting ratio of KClO3 to O2 is 2:3 therefore the number of moles of oxygen produced is ( 4 x3)/2 = 6 moles since four moles of KClO3 was consumed mass=relative formula mass x number of moles That is 32g/mol x 6 moles =192grams
and 
in an acid solution, can be written as :-