PART A: If 0.65kg detergent is required per load of laundry, what percentage (by

Question

PART A: If 0.65kg detergent is required per load of laundry, what percentage (by mass) of the detergent should be sodium carbonate in order to completely precipitate all of the calcium and magnesium ions in an average load of laundry water? Express your answer using two significant figures.
PART B: Write the ions present in solution of 1) AgNO3 2) (NH4)2SO4 3) KNO3 4) (NH4)2S


PART A: If 0.65kg detergent is required per load of laundry, what percentage (by mass) of the detergent should be sodium carbonate in order to completely precipitate all of the calcium and magnesium ions in an average load of laundry water? Express your answer using two significant figures.
PART B: Write the ions present in solution of 1) AgNO3 2) (NH4)2SO4 3) KNO3 4) (NH4)2S


PART A: If 0.65kg detergent is required per load of laundry, what percentage (by mass) of the detergent should be sodium carbonate in order to completely precipitate all of the calcium and magnesium ions in an average load of laundry water? Express your answer using two significant figures.
PART B: Write the ions present in solution of 1) AgNO3 2) (NH4)2SO4 3) KNO3 4) (NH4)2S

Explanation / Answer

Part B

The given compounds are dissociated in the following way and give their respective ions as below

AgNO3 --------> Ag+ + NO3-

(NH4)2SO4 --------> 2 NH4+ + SO42-

KNO3 -------> K+ + NO3-

(NH4)2S --------> 2 NH4+ + S2-

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