2The Mole: A Measurement of Matter 10.1The Mole: A Measurement of MatterYou could measure the amount of sand in a sand sculpture by counting each grain of sand, but it would be much easier to weigh the sand. You’ll discover how chemists measure the amount of a substance using a unit called a mole, which relates the number of particles to the mass.
310.1Measuring MatterMeasuring MatterWhat are three methods for measuring the amount of something?
410.1Measuring MatterYou often measure the amount of something by one of three different methods—by count, by mass, and by volume.You can buy items by different types of measurements, such as a count, a weight or mass, or a volume. Classifying Which of these common items are being sold by weight? By volume? By count?
9for Sample Problem 10.1Problem Solving 10.1 Solve Problem 1 with the help of an interactive guided tutorial.
1010.1What is a Mole?What Is a Mole?How is Avogadro’s number related to a mole of any substance?
1110.1What is a Mole?A mole of any substance contains Avogadro’s number of representative particles, or 6.02 1023 representative particles.The term representative particle refers to the species present in a substance: usually atoms, molecules, or formula units.
12Converting Number of Particles to Moles 10.1What is a Mole?Converting Number of Particles to MolesOne mole (mol) of a substance is 6.02 representative particles of that substance and is the SI unit for measuring the amount of a substance.The number of representative particles in a mole, 6.02 1023, is called Avogadro’s number.
24for Sample Problem 10.3Sample problem 10.3Problem Solving 10.5 Solve Problem 5 with the help of an interactive guided tutorial.
25The Mass of a Mole of an Element 10.1The Mass of a Mole of an ElementThe Mass of a Mole of an ElementHow is the atomic mass of an element related to the molar mass of an element?
26The Mass of a Mole of an Element 10.1The Mass of a Mole of an ElementThe atomic mass of an element expressed in grams is the mass of a mole of the element.The mass of a mole of an element is its molar mass.
27The Mass of a Mole of an Element 10.1The Mass of a Mole of an ElementOne molar mass of carbon, sulfur, mercury, and iron are shown.One molar mass of carbon, sulfur, mercury, and iron are shown. Each of the quantities contains one mole of the element. Applying Concepts How many atoms of each element are shown?
28Animation 11Animation 11Find out how Avogadro’s number is based on the relationship between the amu and the gram.
29The Mass of a Mole of an Element 10.1The Mass of a Mole of an Element
30The Mass of a Mole of a Compound 10.1The Mass of a Mole of a CompoundThe Mass of a Mole of a CompoundHow is the mass of a mole of a compound calculated?
31The Mass of a Mole of a Compound 10.1The Mass of a Mole of a CompoundTo calculate the molar mass of a compound, find the number of grams of each element in one mole of the compound. Then add the masses of the elements in the compound.
32The Mass of a Mole of a Compound 10.1The Mass of a Mole of a CompoundSubstitute the unit grams for atomic mass units. Thus 1 mol of SO3 has a mass of 80.1 g.
33The Mass of a Mole of a Compound 10.1The Mass of a Mole of a CompoundMolar Masses of Glucose, Water, and ParadichlorobenzeneOne molar mass is shown for each of three molecular compounds. Inferring How can you know that each sample contains Avogadro’s number of molecules?