Question

QUICK PLEASE HELP PLEASE
Use the Density Equation to solve the problems.
Equation: Density = mass/volume or D = m/v
A 10.0 cm3 sample of copper has a mass of 89.6 g. What is the density of copper?
Question 1 options:
A 6.5 g / cm3
B 9.5 g / cm3
C 8.96 g / cm3
D 11.2 g / cm3

Use the Density Equation to solve the problems.
Equation: Density = mass/volume or D = m/v
A block of wood has a density of 0.6 g/cm3 and a volume of 1.2 cm3. What is the mass of the block of wood?
Question 2 options:
A 8.2 g
B 1.5 g
C 2.2 g
D 0.72 g

Use the Density Equation to solve the problems.
Equation: Density = mass/volume or D = m/v
A 600g boulder has a density of 8 g/cm3. What is the volume of the boulder?
Question 3 options:
A 75 cm3
B 0.013 cm3
C 66 cm3
D 57 cm3

Answer 1

For question 1: we know the vA=10.0 cm3 and the m=89.6g. Using the equation D = m/vA give us: D = 89.6/10 = 8.96 g/cm3. Answer is (C) 8.96 g / cm3. For question 2: We know the vA=1.2 cm3 and the D=.6 g/cm3. Using the equation D = m/vA and rearranging for m gives us m = D*vA: m = .6 * 1.2 = .72 g. Answer is (D) .72 g. For question 3: We know the D = 8 g/cm3 and the m = 600g. Using equation D = m/vA and rearranging for vA gives us vA = m / D: vA = 600 / 8 = 75 cm3. Answer is (A) 75 cm3.

Answer 2

Question 1: C
Question 2: D
Question 3: A