교과서 질문
A sample of glucose, C6H12O6, contains 1.250×1021 carbon atoms. (c) How many moles of glucose does it contain?
1697
views
Ch.3 - Chemical Reactions and Reaction Stoichiometry
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
당신이 사용하는 게 아니라요?교과서 변경다른 교과서를 선택하세요
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
3장, 문제 42b
A sample of the male sex hormone testosterone, C19H28O2, contains 3.88×1021 hydrogen atoms. (b) How many molecules of testosterone does it contain?
검증된 단계별 안내1
Identify the number of hydrogen atoms in one molecule of testosterone, which is given by the chemical formula \( \text{C}_{19}\text{H}_{28}\text{O}_{2} \). This indicates there are 28 hydrogen atoms per molecule.
Use the given number of hydrogen atoms, \( 3.88 \times 10^{21} \), and divide it by the number of hydrogen atoms per molecule (28) to find the number of testosterone molecules.
Set up the division: \( \frac{3.88 \times 10^{21}}{28} \).
Perform the division to calculate the number of testosterone molecules.
The result from the division will give you the number of testosterone molecules in the sample.
비슷한 문제에 대한 검증된 영상 답변:
이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
1m주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Avogadro's Number
Avogadro's number, approximately 6.022 x 10^23, is the number of atoms, ions, or molecules in one mole of a substance. This constant is crucial for converting between the number of particles and the amount of substance in moles, allowing chemists to relate macroscopic quantities to microscopic entities.
추천 영상:
가이드 코스
02:11
Avogadro's Law
Molecular Formula
The molecular formula of a compound indicates the number and type of atoms present in a molecule. For testosterone, C19H28O2 signifies that each molecule contains 19 carbon atoms, 28 hydrogen atoms, and 2 oxygen atoms. Understanding the molecular formula is essential for determining the number of molecules from the total number of atoms.
추천 영상:
가이드 코스
02:08Determining Molecular Formulas
Stoichiometry
Stoichiometry is the branch of chemistry that deals with the quantitative relationships between the reactants and products in a chemical reaction. In this context, it helps in calculating the number of molecules of testosterone based on the total number of hydrogen atoms, using the ratio of hydrogen atoms per molecule as defined by its molecular formula.
추천 영상:
가이드 코스
01:16Stoichiometry Concept
관련 실천
교과서 질문
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?
1334
views
교과서 질문
The molecular formula of aspartame, the artificial sweetener marketed as NutraSweet®, is C14H18N2O5. (d) How many hydrogen atoms are present in 1.00 mg of aspartame?
1025
views
교과서 질문
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?
교과서 질문
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?
1
views