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Ch.1 - Introduction: Matter, Energy, and Measurement
Brown - Chemistry: The Central Science 14th Edition
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Brown 14th EditionCh.1 - Introduction: Matter, Energy, and Measurement문제 38b
1장, 문제 38b

(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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Identify the given values: mass of cyclohexane = 15.0 g and density of cyclohexane = 0.7781 g/mL.
Recall the formula for density: \( \text{Density} = \frac{\text{Mass}}{\text{Volume}} \).
Rearrange the formula to solve for volume: \( \text{Volume} = \frac{\text{Mass}}{\text{Density}} \).
Substitute the given values into the rearranged formula: \( \text{Volume} = \frac{15.0 \text{ g}}{0.7781 \text{ g/mL}} \).
Calculate the volume to find out how many milliliters of cyclohexane are needed.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Density

Density is defined as mass per unit volume, typically expressed in grams per milliliter (g/mL) or kilograms per cubic meter (kg/m³). It is a crucial property of substances that helps in determining how much space a given mass of material occupies. In this question, the density of cyclohexane is provided, which allows us to calculate its volume based on the mass given.
추천 영상:
가이드 코스
01:56
Density Concepts

Volume Calculation

Volume can be calculated using the formula: Volume = Mass / Density. This relationship shows how mass and density are inversely related; as density increases, the volume for a given mass decreases. In the context of the question, knowing the mass of cyclohexane and its density enables us to find the required volume for the experiment.
추천 영상:
가이드 코스
02:35
Constant-Volume Calorimetry

Units of Measurement

Understanding units of measurement is essential in chemistry, as it ensures that calculations are accurate and meaningful. In this question, mass is given in grams, density in grams per milliliter, and the resulting volume will be in milliliters. Properly converting and using these units is vital for obtaining the correct volume of cyclohexane needed for the experiment.
추천 영상:
가이드 코스
02:52
Units of Radiation Measurement
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