A ALEKS . Leam . Corinne xG sodium bromice molar \\e Chegg Study Guided x Solvin

Question

A ALEKS . Leam . Corinne xG sodium bromice molar e Chegg Study Guided x Solving limiting reactant problems in solution Corinne Suppose 0.21% of ammonium sulfate is dissolved in 300. mL of a 45.0 mM aqueous solution of sodium chromate. Calculate the final molarity of ammonium cation in the solution. You can assume the volume of the solution doesn't change when the ammonium sulfate is dissolved in it. Be sure your answer has the correct number of significant digits. alo Ar Explanation Check LEKS-Learn 12/13/2017

Explanation / Answer

mass of ammonium sulfate = 0.219 g

moles of (NH4)2SO4 = 0.219 / 132.14 = 1.66 x 10^-3 mol

volume = 300 mL

Molarity = moles / volume

             = 1.66 x 10^-3 / 0.3

Molarity = 5.52 x 10^-3 M

final molarity of NH4+ = 0.0111 M

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