교과서 질문
A chemist finds that 30.82 g of nitrogen will react with 17.60, 35.20, 70.40, or 88.00 g of oxygen to form four different compounds. (a) Calculate the mass of oxygen per gram of nitrogen in each compound. 30.82 g N and 70.40 g O
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Ch.2 - Atoms, Molecules, and Ions
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
2장, 문제 12a
Sodium reacts with oxygen in air to form two compounds: sodium oxide and sodium peroxide. In forming sodium oxide, 23.0 g of sodium combines with 8.0 g of hydrogen. In forming sodium peroxide, 23.0 g of sodium combines with 16.0 g of oxygen. (a) What are the mass ratios of oxygen in the two compounds?
검증된 단계별 안내1
Identify the two compounds formed: sodium oxide (Na2O) and sodium peroxide (Na2O2).
Calculate the mass ratio of oxygen in sodium oxide. Given that 23.0 g of sodium combines with 8.0 g of oxygen, the mass ratio of oxygen to sodium in sodium oxide is 8.0 g of oxygen per 23.0 g of sodium.
Calculate the mass ratio of oxygen in sodium peroxide. Given that 23.0 g of sodium combines with 16.0 g of oxygen, the mass ratio of oxygen to sodium in sodium peroxide is 16.0 g of oxygen per 23.0 g of sodium.
Compare the mass ratios of oxygen in the two compounds. This involves comparing the ratio of 8.0 g of oxygen to 23.0 g of sodium in sodium oxide with the ratio of 16.0 g of oxygen to 23.0 g of sodium in sodium peroxide.
Express the mass ratios as a simple ratio or fraction to clearly show the difference in the amount of oxygen combined with a fixed amount of sodium in each compound.
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.
Stoichiometry
Stoichiometry is the branch of chemistry that deals with the quantitative relationships between the reactants and products in a chemical reaction. It allows chemists to calculate the amounts of substances consumed and produced in a reaction based on balanced chemical equations. Understanding stoichiometry is essential for determining mass ratios and ensuring that the law of conservation of mass is upheld.
추천 영상:
가이드 코스
01:16
Stoichiometry Concept
Mass Ratio
A mass ratio is a comparison of the mass of one substance to the mass of another substance, often expressed as a fraction or percentage. In the context of chemical compounds, it helps to understand the proportion of elements within a compound. Calculating mass ratios is crucial for analyzing the composition of compounds formed in reactions, such as sodium oxide and sodium peroxide in this case.
추천 영상:
가이드 코스
02:14Neutron-Proton Ratio
Chemical Formula
A chemical formula represents the elements in a compound and their respective quantities. For example, sodium oxide is represented as Na2O, indicating that two sodium atoms combine with one oxygen atom. Understanding chemical formulas is vital for determining the composition of compounds and calculating mass ratios, as they provide the necessary information about the elements involved in the reaction.
추천 영상:
가이드 코스
02:26Skeletal Formula
관련 실천
교과서 질문
Sodium reacts with oxygen in air to form two compounds: sodium oxide and sodium peroxide. In forming sodium oxide, 23.0 g of sodium combines with 8.0 g of hydrogen. In forming sodium peroxide, 23.0 g of sodium combines with 16.0 g of oxygen. (b) What fundamental law does this experiment demonstrate?
5861
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교과서 질문
A chemist finds that 30.82 g of nitrogen will react with 17.60, 35.20, 70.40, or 88.00 g of oxygen to form four different compounds. (a) Calculate the mass of oxygen per gram of nitrogen in each compound. 30.82 g N and 17.60 g O
376
views
교과서 질문
A 1.0-g sample of carbon dioxide (CO2) is fully decomposed into its elements, yielding 0.273 g of carbon and 0.727 g of oxygen. (a) What is the ratio of the mass of O to C?
753
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교과서 질문
A 1.0-g sample of carbon dioxide (CO2) is fully decomposed into its elements, yielding 0.273 g of carbon and 0.727 g of oxygen. (b) If a sample of a different compound decomposes into 0.429 g of carbon and 0.571 g of oxygen, what is its ratio of the mass of O to C?
829
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교과서 질문
A 1.0-g sample of carbon dioxide (CO2) is fully decomposed into its elements, yielding 0.273 g of carbon and 0.727 g of oxygen. If a sample of a different compound decomposes into 0.429 g of carbon and 0.571 g of oxygen, what is its ratio of the mass of O to C? (c) According to Dalton's atomic theory, what is the empirical formula of the second compound?
2001
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