chemistry: exp. Test 2023

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#1. 33)The process that increases the iron percentage in the ore by changing some of impurities in form of gases is called……

#2. 37) If the value of POH for weak acid equal 10 and its equilibrium constant Ka= 5.1x10-4 , So the degree of ionization of the acid equals ……..

#3. 38)Which of the following standard solutions is used to determine the concentration of silver nitrate……..