A flask containing 9.55 mL of a liquid weighs 157.2 g with the liquid in the flask and 148.4 g w

Name: Problem 90, Chapter 1: Chemistry A Molecular Approach
Uploaded: 2020-02-19T00:36:15-08:00
Duration: 2 min 58 s
Channel: Ahmed Ali
Description: A flask containing 9.55 mL of a liquid weighs 157.2 g with the liquid in the flask and 148.4 g when empty. Calculate the density of the liquid in g / mL to the correct number of significant digits.

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Question

A flask containing 9.55 $\mathrm{mL}$ of a liquid weighs 157.2 $\mathrm{g}$ with the liquid in the flask and 148.4 $\mathrm{g}$ when empty. Calculate the density of the liquid in $\mathrm{g} / \mathrm{mL}$ to the correct number of significant digits.

   A flask containing 9.55 $\mathrm{mL}$ of a liquid weighs 157.2 $\mathrm{g}$ with the liquid in the flask and 148.4 $\mathrm{g}$ when empty. Calculate the density of the liquid in $\mathrm{g} / \mathrm{mL}$ to the correct number of significant digits.

Chemistry A Molecular Approach

Nivaldo J. Tro 4th Edition

Chapter 1, Problem 90

Instant Answer

Solved by Expert Ahmed Ali

02/19/2020

Step 1

We can do this by subtracting the weight of the empty flask from the weight of the flask with the liquid. This can be represented by the equation: \[ \text{Weight of liquid} = \text{Weight of flask with liquid} - \text{Weight of empty flask} \] Show more…

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A flask containing 9.55 $\mathrm{mL}$ of a liquid weighs 157.2 $\mathrm{g}$ with the liquid in the flask and 148.4 $\mathrm{g}$ when empty. Calculate the density of the liquid in $\mathrm{g} / \mathrm{mL}$ to the correct number of significant digits.

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Key Concepts

Density

Density is a fundamental physical property defined as the mass of a substance per unit volume. It is calculated by dividing the mass by the volume, allowing for the comparison of how much mass is packed into a given space for different materials.

Mass Difference

The mass difference concept involves finding the net mass of a substance by subtracting the mass of an empty container from the mass of the container with the substance. This technique isolates the mass of the contents, ensuring that only the mass of the substance is evaluated in calculations.

Significant Figures

Significant figures refer to the digits in a measurement that are known with certainty plus one final digit that is estimated. They indicate the precision of a measurement and help dictate the number of decimal places or figures that should be used in the final result to accurately reflect the uncertainty in the measured values.

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