If 15.2 grams of magnesium carbonate (MgCO3) is added to 150.0 mL of water. When stirred,
the magnesium carbonate settled to the bottom of the beaker, unchanged. Which statement
describes what happened here?
A A homogeneous mixture was made.
B A heterogeneous mixture was made.
C A pure substance was produced.
D A compound was produced.