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In the General, Organic and Biological Chemistry (GOB) Lab Kit: Molar Volume of Hydrogen, investigate the well-known gas laws of Avogadro, Boyle, Charles and Dalton.

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General, Organic and Biological Chemistry Avogadro, Boyle, Charles and Dalton—these scientists and their gas laws are well known. They defined the relationships among four macroscopic gas properties: pressure, volume, temperature and the number of moles of gas. How much gas must be generated to fill a hot air balloon or an airbag? The amount of gas needed to fill any container can be calculated if we know the molar volume of the gas. Answering this general question requires knowledge of all of the gas laws! In this experiment students determine the volume of one mole of hydrogen gas at standard temperature and pressure (STP). The volume of hydrogen collected by water displacement will be measured and corrected for differences in temperature and pressure in order to calculate the molar volume of hydrogen at STP. Complete for 24 students working in pairs.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Asking questions and defining problems
Planning and carrying out investigations
Analyzing and interpreting data
Using mathematics and computational thinking
Engaging in argument from evidence
Obtaining, evaluation, and communicating information

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
HS-PS1.A: Structure and Properties of Matter
HS-PS1.B: Chemical Reactions

Crosscutting Concepts

Energy and matter
Scale, proportion, and quantity

Performance Expectations

MS-PS1-1. Develop models to describe the atomic composition of simple molecules and extended structures.
MS-PS1-2. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
HS-PS1-1. Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
HS-PS1-2. Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.