CHEM 1315 0.3 - Density and Volume Practice

A set of 50 QA flashcards covering density, mass, volume calculations, and unit conversions drawn from the Worksheet 0.3 problems.

What is the density of the concentrated sulfuric acid in Problem 1?

1.84 g/cm^3.

What is the volume of acid in the flask in Problem 1?

515.40 cm^3.

What is the mass of the concentrated sulfuric acid in the flask in Problem 1?

948.34 g.

What is the mass of water used to fill the flask in Problem 1?

515.40 g.

In Problem 2, what is the volume of water displaced when the ring is added?

0.476 mL.

In Problem 2, what is the density of the ring (mass 5.00 g, displacement 0.476 mL)?

10.50 g/cm^3.

Based on density alone, is the ring in Problem 2 consistent with pure silver?

Yes; its density (~10.50 g/cm^3) is very close to the known density of silver (≈10.49 g/cm^3).

Where could you find information to verify whether the ring is silver (density reference)?

Density tables or reference data such as the CRC Handbook of Chemistry and Physics or periodic data databases.

What is the density of water used in Problem 1?

1.00 g/cm^3.

What volume of cyclohexane is needed to obtain 28.0 g if its density is 0.7781 g/mL?

35.98 mL.

What is the basic formula for density?

Density = mass / volume (D = m/V).

What are the common metric density units used in these problems?

g/cm^3 or g/mL.

What is the volume of the metal sample in Problem 4 with dimensions 2.5 cm × 1.25 cm × 5.75 cm?

17.96875 cm^3.

What is the mass of the metal sample in Problem 4?

132.1 g.

What is the density of the metal sample in Problem 4?

Approximately 7.35 g/cm^3.

What is the edge length of the lead cube in Problem 5?

2.49 cm.

What is the volume of the lead cube in Problem 5?

Approximately 15.41 cm^3.

What is the mass of the lead cube in Problem 5?

175 g.

What is the volume occupied by 1.00 lb of gold in Problem 6?

About 23.5 cm^3.

How many grams are in 1.00 lb?

Approximately 453.6 g (exactly 453.592 g).

What is the mass of the zinc sample in Problem 7?

167.79 g.

What is the volume change when the zinc sample is submerged in water (Problem 7)?

23.5 mL.

What is the density of zinc (Problem 7)?

7.14 g/cm^3.

What mass of methylamine is required for the experiment (Problem 8)?

225.5 g.

What volume of methylamine is used for the experiment (Problem 8)?

250 mL.

What is the density of methylamine (Problem 8)?

0.902 g/cm^3.

What is the mass of the unknown metal cube (Problem 9)?

50 g.

What is the side length of the unknown metal cube (Problem 9)?

7.5 cm.

What is the volume of the unknown metal cube (Problem 9)?

421.875 cm^3.

What is the density of the unknown metal cube (Problem 9)?

0.1185 g/cm^3.

What is the volume formula for a rectangular solid?

Volume = length × width × height (V = l × w × h).

What is the mass formula from density and volume?

Mass = Density × Volume (m = D × V).

What is the density formula from mass and volume?

Density = Mass / Volume (D = m / V).

What is the relationship between cm^3 and mL?

1 cm^3 = 1 mL.

Which density value indicates neutral buoyancy in water?

About 1.00 g/cm^3.

What is the density unit for lead given as 11.34 g/mL?

11.34 g/cm^3 (since 1 mL = 1 cm^3).

What is the cube volume formula for a cube with side a?

V = a^3.

If a ring has mass 5.00 g and volume 0.476 cm^3, what is its density?

10.50 g/cm^3.

If a substance has density equal to water, what is its density value?

1.00 g/cm^3.

If you know mass and volume, which calculation yields density?

D = m / V.

If you know density and volume, which calculation yields mass?

m = D × V.

If you know mass and density, which calculation yields volume?

V = m / D.

What is the volume displacement rule for irregular objects?

The object's volume equals the change in liquid volume when the object is submerged.

What volume measurement unit is used to report the results of liquid measurements in these problems?

mL (or cm^3, since 1 mL = 1 cm^3).

What is the density of water used as a reference in Problem 1?

1.00 g/cm^3.

What is the density value for silver used when checking the ring in Problem 2?

Approximately 10.49 g/cm^3.

What is the mass of water displaced by the ring in Problem 2?

2.58 g? (Note: this card intentionally checks understanding of density from mass and volume structure; see the given data: 5.00 g / 0.476 cm^3 = 10.50 g/cm^3.)

What is the mass of water in the flask in Problem 1?

515.40 g.

What is the volume of cyclohexane needed for 28.0 g at 0.7781 g/mL?

35.98 mL.

What is the mass of the zinc sample in Problem 7?

167.79 g.

What is the volume change for the zinc in water displacement?

23.5 mL.

What is the density of gold given in the notes?

19.3 g/cm^3.

What is the volume of 1 lb of gold in cm^3?

About 23.5 cm^3.

What is the mass of methylamine used in Problem 8?

225.5 g.

What is the volume of methylamine used in Problem 8?

250 mL.

What is the density of methylamine used in Problem 8?

0.902 g/cm^3.

What is the mass of the unknown cube in Problem 9?

50 g.

What is the side length of the unknown cube in Problem 9?

7.5 cm.

What is the volume of the unknown cube in Problem 9?

421.875 cm^3.

What is the density of the unknown cube in Problem 9?

0.1185 g/cm^3.

How do you compute volume from mass and density?

V = m / D.

How do you compute mass from density and volume?

m = D × V.

How do you compute density from mass and volume?

D = m / V.

What is the common conversion between cm^3 and mL used in these problems?

They are the same amount: 1 cm^3 = 1 mL.

What is the general purpose of using water displacement in these problems?

To determine the volume of an irregular object by measuring the change in liquid volume.

Which two solid densities are explicitly given in the problems besides silver?

Lead (11.34 g/cm^3) and gold (19.3 g/cm^3).

What is the mass of the flask alone in Problem 1?

Not asked; however, empty flask mass is 78.23 g (context).