I can not find the solution , for these 3 questions

Use the information given in the lab's "Scientifc Background" and the "Flow chart to the unknown" (given at the end of the lab description) to answer the following questions: Put the following steps in the correct order for determining the presence of NH4+lon in a solid unknown The gas that was tested is basic Add dilute NaOH Test the eas with moist red litmus paper No gas is evalved O/1, one or more of the above are out of sequence Put the following steps in order for determining the presence of SO42. ion in a solid unknown Make a solution of the solid sample and add BaCl2(a). No gas is evolved after the addition of base. No sas is evolved after the addition of acid. Add dilute NaOH 0/1, one or more of the above are out of sequence 'Put the following steps in order for determining the presence of Cl ion in a solid unknown A white precioitate is formed No precipitate is produced Make a solution of the solid sample and add AgNO3(aq) Make a solution of the solid sample and add Ba(OH)2(aq) 0/1, one or more of the above are out of sequence