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Mole Conversion Activity

Title: Mole Conversion Activity

Purpose: To calculate the number of Moles and representative particles in a sample.

Procedure:

1. Create a data chart like the one below for 12 samples. Place the molar mass (formula

weight) below the formula for the substance.

2. In this lab you will be moving from lab station to lab station. You will be calculationg the

number of moles and the number of representative particles (atoms, formula units, molecules)

in a given sample.

3. You will need to figure out the mass of the sample in the containers using triple beam

balances. Before you begin massing the containers, find the mass of an empty container. Record

this in the column for container weight. Note: No two identical containers have the same mass;

but, for this lab to run smoothly we will assume this not to be true. Mass the chemical and

container and record this in the mass of container plus chem. column. Subtract these two

columns to obtain the mass of the substance. Using this mass calculate the number of Moles and

the number of representative particles. Record your answer in the appropriate column. SHOW

ALL WORK!

YOU MUST SHOW TRAKCS!

Data:

Chemical

Mass of cont. - Mass of = Mass of Chem.

Calculate

Calculate Representative

Substance

plus Chem.

container

Moles

Particle

1._______

_______

______

________

______

_______________

molar mass =

_______

______

________

______

_______________

2. ________

molar mass =

3. etc. through 12.

Mole Conversion Activity