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Ch.1 - Matter, Measurement & Problem Solving
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Tro 4th EditionCh.1 - Matter, Measurement & Problem Solving문제 72
1장, 문제 72

Human fat has a density of 0.918 g/cm3. How much volume (in cm3) is gained by a person who gains 10.0 lb of pure fat? the reliability of a Measurement and Significant Figures

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1
Convert the mass from pounds to grams using the conversion factor: 1 lb = 453.592 g.
Calculate the total mass in grams by multiplying the mass in pounds by the conversion factor.
Use the formula for density: \( \text{Density} = \frac{\text{Mass}}{\text{Volume}} \) to solve for volume: \( \text{Volume} = \frac{\text{Mass}}{\text{Density}} \).
Substitute the mass in grams and the density of fat (0.918 g/cm³) into the formula to find the volume in cm³.
Ensure the final answer is reported with the correct number of significant figures based on the given data.

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주요 개념

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Density

Density is defined as mass per unit volume, typically expressed in grams per cubic centimeter (g/cm³). It indicates how much mass is contained in a given volume of a substance. In this context, the density of human fat (0.918 g/cm³) is crucial for calculating the volume gained when a specific mass of fat is added.
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가이드 코스
01:56
Density Concepts

Mass to Volume Conversion

To find the volume from mass, the formula used is Volume = Mass / Density. This relationship allows us to convert the mass of fat gained (in pounds) into volume (in cm³) using the known density of fat. It is essential to ensure that the mass is converted to grams to match the density units.
추천 영상:
가이드 코스
04:12
Energy to Mass Conversion

Significant Figures

Significant figures are the digits in a number that contribute to its precision. When performing calculations, especially in chemistry, it is important to maintain the correct number of significant figures based on the precision of the measurements involved. This ensures that the final answer reflects the reliability of the data used in the calculations.
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가이드 코스
01:09
Significant Figures Example
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교과서 질문

Acetone (nail polish remover) has a density of 0.7857 g/cm3. a. What is the mass in g of 28.56 mL of acetone? b. What is the volume in mL of 6.54 g of acetone?

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교과서 질문

Read each measurement to the correct number of significant figures. Laboratory glassware should always be read from the bottom of the meniscus. Digital balances normally display mass to the correct number of significant figures for that particular balance.

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교과서 질문

Read each measurement to the correct number of significant figures. Laboratory glassware should always be read from the bottom of the meniscus.

교과서 질문

A small airplane takes on 245 L of fuel. If the density of the fuel is 0.821 g/mL, what mass of fuel has the airplane taken on?

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교과서 질문

Ethylene glycol (antifreeze) has a density of 1.11 g/cm3. a. What is the mass in g of 417 mL of ethylene glycol? b. What is the volume in L of 4.1 kg of ethylene glycol?

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교과서 질문

Read each measurement to the correct number of significant figures. Laboratory glassware should always be read from the bottom of the meniscus. Digital balances normally display mass to the correct number of significant figures for that particular balance.

625
views