Question

which of these would be correct to put at the end of a density answer? g/lb, g/ml, cm3, g/cm

Explanation:

Density is defined as mass per unit volume, so its unit should be a mass unit divided by a volume unit.

• "g/lb": Pound (lb) is a mass unit, so this is mass/mass, not density.
• "g/ml": Gram (g) is mass, milliliter (ml) is volume (since 1 ml = 1 cm³), so this is mass/volume, a valid density unit.
• "cm³": This is a volume unit, not a density unit (density needs mass/volume).
• "g/cm": Centimeter (cm) is a length unit, so this is mass/length, not density.

Answer:

B. g/ml (assuming the purple option is labeled as B; if the options are labeled differently, adjust the identifier, but the correct unit is g/ml)