AP Chemistryeasymcq1 pt
A metal cube measures 2.00 cm along each edge and has a mass of 45.0 g. What is the density of the metal?
A.22.5 g/cm³
B.5.63 g/cm³
C.0.356 g/cm³
D.11.3 g/cm³
Explanation
Core Concept
Density is defined as mass divided by volume. The cube's volume comes from cubing the edge length: (2.00 cm)^3 = 8.00 cm³. Dividing 45.0 g by 8.00 cm³ gives 5.625 g/cm³, which rounds to 5.63 g/cm³ with three significant figures. Using the bare edge length instead of its cube inflates the result exactly fourfold here.
Correct Answer
B5.63 g/cm³
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