Ch.2 Chemistry and Measurements

Timberlake - Chemistry: An Introduction to General, Organic, and Biological Chemistry 14th Edition

Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Non è quello che usi tu?Cambia libro di testo

Timberlake 14th Edition

Ch.2 Chemistry and Measurements

Problema 74b

Capitolo 2, Problema 74b

Use the density values in TABLE 2.8 to solve each of the following problems:

a. A graduated cylinder contains 18.0 mL of water. What is the new water level, in milliliters, after 35.6 g of silver metal is submerged in the water?

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Identify the relationship between mass, volume, and density using the formula:

d = \frac{m}{V}

, where

d

is density,

m

is mass, and

V

is volume.

Rearrange the formula to solve for volume:

V = \frac{m}{d}

Look up the density of silver in TABLE 2.8. For example, if the density of silver is given as 10.5 g/mL, substitute

m = 35.6

g and

d = 10.5

g/mL into the formula to calculate the volume of silver displaced.

Add the calculated volume of silver to the initial water volume in the graduated cylinder (18.0 mL) to determine the new water level.

Express the final water level in milliliters, ensuring the correct number of significant figures based on the given data.

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Density

Density is defined as mass per unit volume, typically expressed in grams per milliliter (g/mL) for liquids and solids. It is a crucial property that helps determine how much mass of a substance will occupy a certain volume. In this problem, the density of silver will be used to calculate the volume it occupies when submerged in water.

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Percorso guidato

01:56

Density

Volume Displacement

Volume displacement refers to the principle that when an object is submerged in a fluid, it displaces an amount of fluid equal to the volume of the object. This concept is essential for understanding how the addition of silver to the graduated cylinder will affect the water level, as the volume of silver will increase the water level by the volume it displaces.

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Percorso guidato

01:36

Density of Non-Geometric Objects Concept and Example

Graduated Cylinder

A graduated cylinder is a common laboratory instrument used to measure the volume of liquids accurately. It is marked with measurement lines to indicate volume levels. In this problem, the graduated cylinder's initial water level and the final water level after adding silver will be compared to determine the change in volume due to the submerged metal.

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Percorso guidato

01:49

Laboratory Materials

Pratica correlata

Domanda del libro di testo

In an old trunk, you find a piece of metal that you think may be aluminum, silver, or lead. You take it to a lab, where you find it has a mass of 217 g and a volume of 19.2 cm³. Using Table 2.10, what is the metal you found?

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Domanda del libro di testo

What is the density (g/mL) of each of the following samples?

b. A syrup is added to an empty container with a mass of 115.25 g. When 0.100 pt of syrup is added, the total mass of the container and syrup is 182.48 g.

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Solve each of the following problems:

d. A bottle containing 325 g of cleaning solution is used to clean hospital equipment. If the cleaning solution has a specific gravity of 0.850, what volume, in milliliters, of solution was used?

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Solve each of the following problems:

c. The specific gravity of a vegetable oil is 0.92. What is the mass, in grams, of 750 mL of vegetable oil?

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Domanda del libro di testo

What is the density (g/mL) of each of the following samples?

a. An ebony carving has a mass of 275 g and a volume of 207 cm³.

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