Crucible Experiment Lab Report

Using a scoopula, add 5-6 grams of the hydrate into the dish and measure the mass of the hydrate and the dish

30. Same as carried out in Part (b), repeat steps 18. to 24. to dissolve the gas in the syringe in the heated de-ionised water.

The tweezers were then sterilized by dipping them in methanol and passing them through the flame. They were then held and allowed to cool for 30 seconds.

17) Pour a small amount of the hot solvent into the flask containing the solid.

2.Heat stove at a medium-high heat (7/10 on most stove units); let it heat up for 3 minutes

Copied the observations table in our notebook. Then recorded the mass of the beaker using the balance and wrote down the measured mass in the observation

After all results have been recorded, pour all of the solutions down the drain, rinse equipment and clean up the

Turn on the gas burner and bring it a low heat, only to the point that there is a blue flame. Carefully push the gas burner under the crucible and heat for around two minutes in order to properly rid the crucible of any bacterias or other impurities that may affect the lab.

Obtain a scintillation vial and label it using tape and a pen. For this part of the lab, make sure to record the mass of the empty vial using a digital scale before proceeding. Now, obtain 0.100 g of the same unknown substance and place into the vial. Record the exact mass again and be sure to take note of any crystal formation that occurs.

9) Trial E: Remove the syringe and empty the beaker. Add a Thermometer to the beaker. Add 200 mL of Room Temperature water to the beaker and heat with a Bunsen Burner until it reaches 100° C. Remove the Bunsen Burner. Repeat Steps 5 & 6.

The powdered cobalt oxalate hydrate was weighed to about 0.3 g and placed in a pre-weighed crucible. The crucible and the cobalt oxalate were then heated until the cobalt oxalate decomposed into a stable, black solid, or Co3O4. Once the crucible was sufficiently

Subsequently, two porcelain crucibles were used, weighed, and heated for about 10 minutes and then placed into a desiccator to cool. The two empty porcelain crucibles were first heated because the heat would vaporize any impurities that were originally on the crucible. The first crucible weighed 11.9047 g and the second crucible weighed 12.3735 g. Once the mass of the two crucibles

1) Allow the copper in the beaker to dry at low temperature in a drying oven for at least one hour.

Submerge the graduated cylinder in the plastic tub so that it is completely filled with water. Hold the open end of the graduated cylinder and move it vertically upside-down where the open end of the graduated cylinder is still submerged in the plastic tub. Clamp the graduated cylinder the ring stand of the lab table to keep it in place. perforate a hole in the top of the rubber cork for the solution container. Cut a straw the length of about four inches. place the straw inside of the rubber cork hole. Set up your timer for two minutes.

2. Obtain an evaporating dish and carefully weigh it to the nearest 0.01g on top of the loading scale and record its mass on the data sheet.