Domanda del libro di testo
(c) Is a graduated cylinder such as that shown in Figure 1.21 likely to afford the accuracy of measurement needed?
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Ch.1 - Introduction: Matter, Energy, and Measurement
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
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Brown 14th EditionCh.1 - Introduction: Matter, Energy, and MeasurementProblema 37d
Brown 14th EditionCh.1 - Introduction: Matter, Energy, and MeasurementProblema 37dCapitolo 1, Problema 37d
(d) A cubic piece of metal measures 5.00 cm on each edge. If the metal is nickel, whose density is 8.90 g/cm3, what is the mass of the cube?
Guida verificata passo dopo passo1
Calculate the volume of the cube using the formula for the volume of a cube: \( V = \text{side}^3 \). Here, the side length is 5.00 cm.
Substitute the side length into the volume formula: \( V = (5.00 \text{ cm})^3 \).
Calculate the volume in cubic centimeters.
Use the density formula to find the mass: \( \text{mass} = \text{density} \times \text{volume} \).
Substitute the known values into the density formula: \( \text{mass} = 8.90 \text{ g/cm}^3 \times \text{volume} \).
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Density
Density is defined as the mass of an object divided by its volume, typically expressed in grams per cubic centimeter (g/cm³). It is a crucial property that helps identify substances and can be used to calculate mass or volume when the other is known. In this case, the density of nickel is given as 8.90 g/cm³, which will be used to find the mass of the cube.
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Percorso guidato
01:56
Density Concepts
Volume of a Cube
The volume of a cube is calculated using the formula V = a³, where 'a' is the length of one edge of the cube. For a cube measuring 5.00 cm on each edge, the volume can be determined by cubing the edge length. This volume will be essential for calculating the mass of the nickel cube using its density.
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Percorso guidato
02:35Constant-Volume Calorimetry
Mass Calculation
Mass can be calculated using the formula: mass = density × volume. Once the volume of the cube is determined, multiplying it by the density of nickel will yield the mass of the cube. This relationship is fundamental in chemistry for converting between mass, volume, and density.
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03:12Molar Mass Calculation Example
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Domanda del libro di testo
(c) A spherical ball of lead has a diameter of 5.0 cm. What is the mass of the sphere if lead has a density of 11.34 g>cm3? (The volume of a sphere is 14>32pr3, where r is the radius.)
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Domanda del libro di testo
(a) After the label fell off a bottle containing a clear liquid believed to be benzene, a chemist measured the density of the liquid to verify its identity. A 25.0-mL portion of the liquid had a mass of 21.95 g. A chemistry handbook lists the density of benzene at 15 °C as 0.8787 g/mL. Is the calculated density in agreement with the tabulated value?
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Domanda del libro di testo
(b) An experiment requires 45.0 g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
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Domanda del libro di testo
(b) An experiment requires 15.0 g of cyclohexane, whose density at 25 C is 0.7781 g>mL. What volume of cyclohexane should be used?
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Domanda del libro di testo
(a) To identify a liquid substance, a student determined its density. Using a graduated cylinder, she measured out a 45-mL sample of the substance. She then measured the mass of the sample, finding that it weighed 38.5 g. She knew that the substance had to be either isopropyl alcohol 1density 0.785 g/mL2 or toluene (density 0.866 g/mL). What are the calculated density and the probable identity of the substance?
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