Mr. McPhillip has a ribbon of magnesium (Mg), a silvery metal. As a demonstration for his class, he sets the metal on fire. It b
urns brightly, leaving behind a whitish powder. Mr. McPhillip has a ribbon of magnesium (Mg), a silvery metal. As a demonstration for his class, he sets the metal on fire. It burns brightly, leaving behind a whitish powder.
The magnesium is a(n) _______, and the powder produced by burning it is a(n) _______.
A.
element; compound
B.
compound; compound
C.
compound; element
D.
element; element
Each mole of barium sulfate releases equal moles of barium ions and sulfate ions. Let the concentration of one substance be x. Thus: Ksp = [Ba⁺²][SO₄⁻²] 1.1 x 10⁻¹⁰ = (x)(x) x = 1.05 x 10⁻⁵
