Domanda del libro di testo
At least 25 mg of tetrahydrocannabinol (THC), the active ingredient in marijuana, is required to produce intoxication. The molecular formula of THC is C21H30O2. How many molecules?
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Ch.3 - Chemical Reactions and Reaction Stoichiometry
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
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
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Brown 14th EditionCh.3 - Chemical Reactions and Reaction StoichiometryProblema 43b
Brown 14th EditionCh.3 - Chemical Reactions and Reaction StoichiometryProblema 43bCapitolo 3, Problema 43b
The allowable concentration level of vinyl chloride, C2H3Cl, in the atmosphere in a chemical plant is 2.0⨉10−6 g/L. How many molecules per liter?
Guida verificata passo dopo passo1
First, understand that the problem requires converting the concentration from grams per liter to molecules per liter. This involves using the molar mass of vinyl chloride and Avogadro's number.
Calculate the molar mass of vinyl chloride, C2H3Cl. Add the atomic masses of all the atoms in the molecule: 2 carbon atoms, 3 hydrogen atoms, and 1 chlorine atom.
Convert the given concentration from grams per liter to moles per liter by dividing the concentration (2.0⨉10−6 g/L) by the molar mass of vinyl chloride.
Use Avogadro's number (6.022⨉10^23 molecules/mol) to convert the concentration from moles per liter to molecules per liter. Multiply the moles per liter by Avogadro's number.
The result from the previous step will give you the number of molecules of vinyl chloride per liter in the atmosphere.
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Molar Mass Calculation
To convert grams of a substance to moles, one must first calculate its molar mass. For vinyl chloride (C2H3Cl), the molar mass is the sum of the atomic masses of its constituent elements: carbon (C), hydrogen (H), and chlorine (Cl). This is essential for determining how many moles correspond to a given mass, which is a crucial step in converting to molecules.
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Percorso guidato
03:12
Molar Mass Calculation Example
Avogadro's Number
Avogadro's number, approximately 6.022 × 10²³, is the number of particles (atoms, molecules, etc.) in one mole of a substance. This constant allows chemists to convert between moles and the number of molecules, making it fundamental for calculations involving concentrations and amounts of substances in chemical reactions.
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Percorso guidato
02:11Avogadro's Law
Concentration Units
Concentration is a measure of how much solute is present in a given volume of solution, commonly expressed in units like grams per liter (g/L). Understanding how to manipulate these units is crucial for converting concentration values into different forms, such as molecules per liter, which is necessary for answering the question about vinyl chloride levels in the atmosphere.
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Percorso guidato
02:13SI Units
Pratica correlata
Domanda del libro di testo
The allowable concentration level of vinyl chloride, C2H3Cl, in the atmosphere in a chemical plant is 2.0×10−6 g/L. How many moles of vinyl chloride in each liter does this represent?
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Domanda del libro di testo
A sample of the male sex hormone testosterone, C19H28O2, contains 3.88×1021 hydrogen atoms. (b) How many molecules of testosterone does it contain?
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Domanda del libro di testo
At least 25 mg of tetrahydrocannabinol (THC), the active ingredient in marijuana, is required to produce intoxication. The molecular formula of THC is C21H30O2. How many moles of THC does this 25 mg represent?
Domanda del libro di testo
A sample of the male sex hormone testosterone, C19H28O2, contains 3.88×1021 hydrogen atoms. (c) How many moles of testosterone does it contain? (d) What is the mass of this sample in grams?
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Domanda del libro di testo
Give the empirical formula of each of the following compounds if a sample contains (a) 0.052 mol C, 0.103 mol H, and 0.017 mol O
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