Molar Mass Teacher Resources
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Molar Mass Word Problems
All units and significant figures should be used correctly as part of this check on molar mass calculations. These word problems range in complexity and present the missing variable in different ways. Your young scientists might enjoy this different approach to chemistry calculations.
The Ideal Gas law, Molar Mass and Density
In this ideal gas law, molar mass and density activity, students read about how the molar mass and density of a gas can be determined from the ideal gas law. They solve five problems using the ideal gas law to find the pressure, density, molar mass and volume of gases.
High schoolers apply the ideal gas law and Dalton's Law of Partial Pressure to develop an experiment which determine the molar mass of butane from disposable lighters. In small groups, they develop a procedure and have it approved before performing the experiment.
Chapter 13 Review, Section 2: Ions in Aqueous Solutions and Colligative Properties
Here is a general chemistry worksheet that incorporates practical applications. Four questions employ critical thinking about solutions, boiling and freezing points, and molar mass. Your class will practice what they learn in class by completing this as homework.
Chemical Calculations and Chemical Formulas
In this stoichiometry worksheet, students calculate molar masses, empirical and molecular formulas to solve 105 problems and short answer questions.
Naming Compounds and Molar Masses
In this chemical compounds worksheet, students write the name of the compounds from their chemical formula and determine the molar masses to the nearest g/mol. This worksheet has 16 problems to solve.
Ideal Gas Example 4
Sal continues his explanation of The Ideal Gas Equation in this chemistry video. He sets up a different problem from the previous video, and uses the ideal gas equation to calculate the molar mass of a 98 ml container that contains .081 grams of a substance at standard pressure and temperature.
Molar Mass Practice Worksheet
In this molar mass worksheet, students determine the molar masses of the 10 chemical compounds given. This worksheet also has answers.
Converting Mass to Amount
For this mass worksheet, students determine the number of moles from a given molar mass and volume being sure that they use the correct conversion factors. This worksheet has 12 problems to solve.
Extracting Oxygen from Moon Rocks
For this extracting oxygen from moon rocks worksheet, high schoolers read about the need for oxygen for lunar colonists. Students solve 2 problems about the lunar mineral ilmenite which contains oxygen and other elements. They find the molar mass of ilmenite, the molar mass of hydrogen gas, iron and titanium dioxide. They determine how much water would be produced from 1 kg of ilmenite.
Understanding the Mole
High schoolers develop an understanding of the mole and molar masses of elements. In this mole lesson plan, students use beans to find their relative masses and draw parallels to the atomic masses of elements. High schoolers work in teams and each student finds the relative mass of one type of bean. Students compare their data and answer 5 questions. They then calculate the relative masses of elements and answer 5 questions.
What Can We Measure about Chemicals?
In this measuring chemicals activity, students determine the accuracy and precision of measurements and distinguish between the two. They find the percent composition of compounds, the molar mass of compounds and the volume of gases at given temperatures and pressures.
Molecules, Moles and Molar Masses
For this molecules, moles and molar masses worksheet, students find the atomic masses of 8 elements, they write the formulas for 6 diagrams of molecules and they find the molecular masses of 12 compounds. Students also find the fraction of atoms in compounds and determine the percent composition of each.
Converting Amount to Mass
In this elements worksheet, students practice converting a given amount of an element to the mass using its molar mass. This worksheet has 12 problems to solve.
Atomic Mass, Moles, and the Periodic Table
In this periodic table activity, students review atomic mass, molar mass, and percent composition of compounds. Then students complete 4 problems.
Only three slides comprise this collection. The first defines molecular weight and molar mass. The second lists the molar mass and number of particles in a mole of several substances. The third is a chart depicting a chemical reaction both graphically and with chemical equations. Together, they make a nice, neat presentation that you can use to prepare beginning chemists to start learning about stoichiometry.
Determining the Molar Mass of a Gas
Students determine the molar mass of a gas. In this molar mass of a gas lesson plan, students use the vapor density of an organic solvent to determine its molar mass. They vaporize the solvent and collect the vapor. Once it is cooled they can mass the vapor and use the universal gas equation to find the molar mass.
Molar Mass Determination by Freezing Point Depression
This is an interesting selection of information about the freezing temperature of nitrobenzene and a comparable related mixture. Data is provided for your class to use to simulate the experiment and to plot a graph. Questions are then asked about the cooling graph and the solution. Pupils should be able to calculate the concentration, molarity, and molar mass of the constituents.
For this natural resources worksheet, students compare examples of chemical and physical properties, balance equations, and calculate molar mass and moles. This worksheet has 12 problems to solve and 12 short answer questions.
Molar Mass of Butane
This lab sheet gives a detailed procedure for your class to find the mass of Butane. There is a complete guide for calculations, data analysis, and conclusion.