75 g KMnO4 = molecules KMnO4 7.23 × 1024 Al atoms = grams Al 9.23 × 1023 Au atoms = moles Au 125 g H3PO4 = molecules H3PO4 0.75 moles CO2 = total atoms

Which of the following describes qualitative data? a) recording the temperature of a solid as it is warmed. b) noting the color of a solution as it is heated. c) measuring the volume of an object by water displacement. d) taking the mass of an object using a balance.