230k views
0 votes
Perform this operation and report the answer to the correct number of significant figures: What is the mass of a cube of aluminum that is 4.0 cm on each edge? The density of aluminum is 2.7 g/cm^3. Show all calculations leading to an answer.

User Guilhebl
by
8.3k points

1 Answer

1 vote
The answer is 172.8 g.

The volume of the cube (V) is:
V = a³ (a - the side of the cube)

The density (D) is quotient of mass (m) and volume (V):
D = m/V = m/a³
⇒ m = D · a³


It is given:
D = 2.7 g/cm
³
a = 4 cm
Therefore:
m = D · a³ = 2.7 · 4³ = 172.8 g
User Everts
by
7.6k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories