교과서 질문
What is the mass of chloride ions in 375.0 mL of solution with a magnesium chloride concentration of 0.250 M? (LO 4.2)
(a) 3.32 g
(b) 47.3 g
(c) 23.6 g
d) 6.65 g
371
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Ch.4 - Reactions in Aqueous Solution
McMurry8th EditionChemistryISBN: 9781292336145
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TOC.tableOfContents
- Ch.1 - Chemical Tools: Experimentation & Measurement170
- Ch.2 - Atoms, Molecules & Ions160
- Ch.3 - Mass Relationships in Chemical Reactions169
- Ch.4 - Reactions in Aqueous Solution199
- Ch.5 - Periodicity & Electronic Structure of Atoms102
- Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory92
- Ch.7 - Covalent Bonding and Electron-Dot Structures61
- Ch.8 - Covalent Compounds: Bonding Theories and Molecular Structure59
- Ch.9 - Thermochemistry: Chemical Energy122
- Ch.10 - Gases: Their Properties & Behavior155
- Ch.11 - Liquids & Phase Changes54
- Ch.12 - Solids and Solid-State Materials73
- Ch.13 - Solutions & Their Properties120
- Ch.14 - Chemical Kinetics98
- Ch.15 - Chemical Equilibrium125
- Ch.16 - Aqueous Equilibria: Acids & Bases110
- Ch.17 - Applications of Aqueous Equilibria147
- Ch.18 - Thermodynamics: Entropy, Free Energy & Equilibrium86
- Ch.19 - Electrochemistry154
- Ch.20 - Nuclear Chemistry96
- Ch.21 - Transition Elements and Coordination Chemistry156
- Ch.22 - The Main Group Elements187
- Ch.23 - Organic and Biological Chemistry51
4장, 문제 1
What is the molarity of a solution prepared by dissolving 10.19 g of ethanol (CH3CH2OH) in enough water to produce 250.0 mL of solution? (LO 4.1) (a) 0.8848 M (b) 18.08 M (c) 1.130 M (d) 0.01808 M
검증된 단계별 안내1
Calculate the molar mass of ethanol (CH_3CH_2OH) by adding the atomic masses of its constituent atoms: C (12.01 g/mol), H (1.008 g/mol), and O (16.00 g/mol).
Convert the mass of ethanol (10.19 g) to moles using the molar mass calculated in the previous step.
Convert the volume of the solution from milliliters to liters by dividing 250.0 mL by 1000.
Calculate the molarity of the solution by dividing the number of moles of ethanol by the volume of the solution in liters.
Compare the calculated molarity with the given options to determine the correct answer.
비슷한 문제에 대한 검증된 영상 답변:
이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
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주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Molarity
Molarity is a measure of concentration defined as the number of moles of solute per liter of solution. It is expressed in moles per liter (M). To calculate molarity, one must know the amount of solute in grams, convert it to moles using the molar mass, and then divide by the volume of the solution in liters.
추천 영상:
가이드 코스
01:13
Molarity
Molar Mass
Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). For ethanol (C2H5OH), the molar mass can be calculated by summing the atomic masses of its constituent elements: carbon, hydrogen, and oxygen. This value is essential for converting grams of a substance to moles.
추천 영상:
가이드 코스
02:11Molar Mass Concept
Volume Conversion
Volume conversion is the process of converting units of volume to ensure consistency in calculations. In this context, the volume of the solution is given in milliliters (mL) and must be converted to liters (L) for the molarity calculation, as molarity is defined in terms of liters of solution.
추천 영상:
가이드 코스
02:38Common Conversion Factors
관련 실천
교과서 질문
Refer to the figure to answer questions 4 and 5. The images are a molecular representation of three different substances, AX3, AY3, and AZ3, dissolved in water. (Water molecules are omitted for clarity.)
Which of the substances is the weakest electrolyte? (LO 4.6)
(a) AX3
(b) AY3
(c) AZ3
(d) All of the substances are strong electrolytes.
452
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교과서 질문
What volume of a 2.00 M stock solution of NaOH is required to prepare 50.0 mL of 0.400 M NaOH? (LO 4.4)
(a) 15.0 mL
(b) 1.00 mL
(c) 10.0 mL
(d) 4.00 mL
1183
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