Molar Mass Teacher Resources

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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.
In this ideal gas law, molar mass and density worksheet, 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.
Students 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.
For 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.
In this molar mass instructional activity, students determine the molar masses of the 10 chemical compounds given. This instructional activity also has answers.
In this stoichiometry activity, students calculate molar masses, empirical and molecular formulas to solve 105 problems and short answer questions.
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.
In this mass worksheet, learners 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.
For this extracting oxygen from moon rocks worksheet, students 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.
Students 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. Students 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.
In this measuring chemicals worksheet, 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.
Here is a general chemistry activity 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.
In this elements instructional activity, students practice converting a given amount of an element to the mass using its molar mass. This instructional activity has 12 problems to solve.
In this periodic table worksheet, students review atomic mass, molar mass, and percent composition of compounds. Then students complete 4 problems.
In this natural resources activity, students compare examples of chemical and physical properties, balance equations, and calculate molar mass and moles. This activity has 12 problems to solve and 12 short answer questions.
For this molecules, moles and molar masses worksheet, learners 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.
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.
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.
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.
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.

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