How many moles and numbers of ions of each type are present in the following aqueous solution? 419 mL of 0.384 g aluminum sulfate/L
a) 0.0069 moles of Al³⁺ ions and 0.0138 moles of SO₄²⁻ ions
b) 0.0138 moles of Al³⁺ ions and 0.0069 moles of SO₄²⁻ ions
c) 0.0069 moles of Al²⁺ ions and 0.0138 moles of SO₄²⁻ ions
d) 0.0138 moles of Al²⁺ ions and 0.0069 moles of SO₄²⁻ ions
