A student mixes 50.0 mL of 0.020 M Ba(NO₃)₂ with 100.0 mL of 0.040 M Na₂SO₄ at 25 °C. The solubility-product constant for BaSO₄ at this temperature is Ksp=1.1×10−10. Calculate the ion product Q for BaSO₄ immediately after mixing, state whether a precipitate will form, and, if one does, provide the balanced net ionic equation.