High School

Given that a cylinder is made of pure gold \((D=19.3 \text{ g/cm}^3)\) with a height \(h=22.0 \text{ cm}\) and radius \(r=3.80 \text{ cm}\), find the mass in grams (g) of this particular cylinder.

*Volume (V) of a cylinder: \(V=\pi r^2 \times h\)

A. 13.6 g
B. 5070 g
C. 51.7 g
D. None of These
E. 19300 g

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Calculate the density (D) of a perfect cube with a mass of 0.153 kg and a length, width, and height (L, W, H) of 3.50 cm.

A. 280 g/cm\(^3\)
B. 0.280 g/cm\(^3\)
C. 43.7 g/cm\(^3\)
D. 0.00357 g/cm\(^3\)
E. 3.57 g/cm\(^3\)

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Find the density of an object with a mass of 4350 mg and a volume of 2.68 cm\(^3\).

A. 1620 g/cm\(^3\)
B. None of These
C. 0.0162 g/cm\(^3\)
D. 1.62 g/cm\(^3\)
E. 1620000 g/cm\(^3\)

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If a metal substance is found to have a density of 18.3 g/cm\(^3\), what is the substance most likely to be based on known density values? (Refer to Table 1.4 in your textbook)

A. Lead
B. Iron
C. Aluminum
D. Gold
E. Copper

Answer :

To solve these problems, we'll use the provided formulas of mass and volume and calculations. The substance is most likely to be Gold.

1. Mass of the cylinder:

The volume of a cylinder is given by the formula: V = πr^2h

V = π(3.80 cm)^2 × 22.0 cm

V ≈ 64.53 cm^3

Mass (m) = Volume (V) × Density (D)

m = 64.53 cm^3 × 19.3 g/cm^3 ≈ 1246.62 g

Therefore, the mass of the cylinder is approximately 1246.62 grams. None of the provided options matches this value.

2. Density of a cube:

Density (D) is defined as the mass (m) divided by the volume (V): D = m/V

Volume of a cube is given by: V = L × W × H

Density (D) = 153 g / 42.88 cm^3 ≈ 3.57 g/cm^3Therefore, the density of the cube is approximately 3.57 g/cm^3. None of the provided options matches this value.

3. Density of an object:

Converting mass to grams: 4350 mg = 4.35 g

Density (D) = 4.35 g / 2.68 cm^3 ≈ 1.62 g/cm^3

Therefore, the density of the object is approximately 1.62 g/cm^3. None of the provided options matches this value.

4. Identifying the substance based on density:

- Lead: Density ≈ 11.3 g/cm^3

- Iron: Density ≈ 7.87 g/cm^3

- Aluminum: Density ≈ 2.70 g/cm^3

- Gold: Density ≈ 19.3 g/cm^3

- Copper: Density ≈ 8.96 g/cm^3

Among the provided options, the substance most likely to be based on the known density values is Gold, as its density closely matches the given value of 18.3 g/cm^3.

So, the substance is most likely to be Gold.

Learn more about volume here:

brainly.com/question/14197390

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