Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 1: Problem 96

In your own words, define or explain the following terms or symbols: (a) \(\mathrm{mL}\) (b) \(\%\) by mass (c) \(^{\circ}$$\text{C}\) (d) density (e) element.

Short Answer

Expert verified
The meanings of the terms are as follows: (a) \(\mathrm{mL}\) is a unit of volume known as milliliters, (b) \(\%\) by mass is a measure of concentration by mass, (c) \(^{\circ}$$\text{C}\) is a unit of temperature measure known as degrees Celsius, (d) density is the amount of mass contained per unit volume, (e) an element is a substance that cannot be broken down into simpler substances by ordinary chemical methods.

Step by step solution

01

Defining \(\mathrm{mL}\)

The symbol \(\mathrm{mL}\) stands for milliliters, a unit of volume in the metric system, which is commonly used in scientific measurements. One milliliter is equal to \(\frac{1}{1000}\) of a liter or 1 cubic centimeter.
02

Defining \(\%\) by mass

Percent by mass, symbolized by \(\%\), is a measure of the concentration of a substance in a mixture or solution. It is calculated by dividing the mass of the substance by the total mass of the mixture or solution, and then multiplying the result by 100 to get a percentage.
03

Defining \(^{\circ}$$\text{C}\)

The symbol \(^{\circ}$$\text{C}\) represents degrees Celsius, a unit of temperature. The boiling point of water at normal atmospheric pressure is 100°C and its freezing point is 0°C.
04

Defining Density

Density is a property of matter defined as mass per unit volume. In other words, it measures how much mass is contained in a given volume of a material. The measurement unit commonly used for density is kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).
05

Defining Element

In chemistry, an element refers to a substance that cannot be broken down into simpler substances by ordinary chemical methods. Each element is distinguished by its atomic number, i.e., the number of protons in its atomic nucleus. Examples include hydrogen, carbon, oxygen, gold, etc.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

The following densities are given at \(20^{\circ} \mathrm{C}\) : water, \(0.998 \mathrm{g} / \mathrm{cm}^{3} ;\) iron, \(7.86 \mathrm{g} / \mathrm{cm}^{3} ;\) aluminum, \(2.70 \mathrm{g} / \mathrm{cm}^{3}\). Arrange the following items in terms of increasing mass. (a) a rectangular bar of iron,$$81.5 \mathrm{cm} \times 2.1 \mathrm{cm} \times 1.6 \mathrm{cm}$$ (b) a sheet of aluminum foil,$$12.12 \mathrm{m} \times 3.62 \mathrm{m} \times 0.003 \mathrm{cm}$$ (c) 4.051 L of water

A lump of pure copper weighs \(25.305 \mathrm{g}\) in air and 22.486 g when submerged in water \((d=0.9982 \mathrm{g} / \mathrm{mL})\) at \(20.0^{\circ} \mathrm{C} .\) Suppose the copper is then rolled into a \(248 \mathrm{cm}^{2}\) foil of uniform thickness. What will this thickness be, in millimeters?

Determine the number of the following: (a) square meters \(\left(\mathrm{m}^{2}\right)\) in 1 square kilometer \(\left(\mathrm{km}^{2}\right)\) (b) cubic centimeters \(\left(\mathrm{cm}^{3}\right)\) in 1 cubic meter \(\left(\mathrm{m}^{3}\right)\) (c) square meters \(\left(\mathrm{m}^{2}\right)\) in 1 square mile \(\left(\mathrm{mi}^{2}\right)\) \((1 \mathrm{mi}=5280 \mathrm{ft})\)

How many significant figures are shown in each of the following? If this is indeterminate, explain why. (a) 450 ; (b) 98.6 ; (c) $0.0033 ; (d) 902.10 ; (e) 0.02173 ; (f) 7000 ; (g) 7.02 ; (h) 67,000,000

Blood alcohol content (BAC) is sometimes reported in weight-volume percent and, when it is, a BAC of \(0.10 \%\) corresponds to \(0.10 \mathrm{g}\) ethyl alcohol per \(100 \mathrm{mL}\) of blood. In many jurisdictions, a person is considered legally intoxicated if his or her BAC is 0.10\%. Suppose that a 68 kg person has a total blood volume of 5.4 L and breaks down ethyl alcohol at a rate of 10.0 grams per hour. \(^{*}\) How many 145 mL glasses of wine, consumed over three hours, will produce a BAC of \(0.10 \%\) in this 68 kg person? Assume the wine has a density of \(1.01 \mathrm{g} / \mathrm{mL}\) and is \(11.5 \%\) ethyl alcohol by mass. (* The rate at which ethyl alcohol is broken down varies dramatically from person to person. The value given here for the rate is a realistic, but not necessarily accurate, value.)
See all solutions

Recommended explanations on Chemistry Textbooks

Inorganic Chemistry

Read Explanation

Chemistry Branches

Read Explanation

Chemical Analysis

Read Explanation

Physical Chemistry

Read Explanation

Nuclear Chemistry

Read Explanation

Organic Chemistry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free