Question

It is necessary in certain types of experiments to begin by heating a crucible to constant mass. Identify the steps in this process.

1) Heat a crucible using a Bunsen burner
2) Allow the crucible to cool
3) Measure the mass of the crucible
4) Repeat steps 1-3 as needed to obtain a constant value

Answer 1

The steps to heat a crucible to constant mass: measuring the mass of the crucible, heating it, allowing it to cool, and repeating the process as needed.

Step-by-step explanation:

The steps to heat a crucible to constant mass are as follows:

1. Measure the mass of the crucible.
2. Heat the crucible using a Bunsen burner.
3. Allow the crucible to cool.
4. Repeat steps 2-3 as needed to obtain a constant mass.

By measuring the initial mass of the crucible and then heating it, any residual moisture or impurities in the crucible will be evaporated, resulting in a constant mass. Repeating the process ensures that the crucible has reached a constant mass and is ready for use in an experiment.