Gold has a density of 19.3 g/cm3 and iron has a density of 7.9 g/cm3. You have a block of gold that has a volume of 3 cm3. You have a block of iron that has a volume of 5 cm3. Which block has a greater mass?
A. The gold block
B. The iron block
C. The masses of both blocks are equal.
D. There is not enough information to answer the question.

Question

Gold has a density of 19.3 g/cm3 and iron has a density of 7.9 g/cm3.  You have a block of gold that has a volume of 3 cm3.  You have a block of iron that has a volume of 5 cm3.  Which block has a greater mass?
	A.	The gold block
	B.	The iron block
	C.	The masses of both blocks are equal.
	D.	There is not enough information to answer the question.

anonymous · Answer

=i need help please

mrnood · Answer

The clue is in the unit of density : grams PER cm^3
PER means 'for each' i.e 1cm^3 weighs 19.3g for gold and 7.9g for iron

Simply multiply the density by the volume to get the mass