Silver nitrate precipitate lab

Purpose: Find how much silver is produced from 1g of silver nitrate.
Hypothesis: If silver nitrate is mixed with copper wire, then one gram of silver precipitate will form on the wire.
Materials: Silver nitrate solution, copper wire, distilled water, test tube, beaker, filter paper and small funnel.
Procedure: Pour 1g of silver nitrate solution into the test tube, leaving enough room left for the copper wire. Carefully put on 30cm of copper wire into the test tube and tape over the opening of the tube. Let the wire sit in the solution for 24 hours. Upon return, position the funnel over the opening of the beaker and roll the filter paper to create a cone to catch any precipitate that may have formed from the reaction. Next, carefully remove the tape from the test tube and pour out the excess solution into the filter paper cone. Then, lightly spray the copper wire with distilled water, getting off any precipitate from the wire and into the paper cone. Once all remaining precipitate is in the filter paper, weigh the wire and the precipitate separately.
Conclusions: 0.35g of silver was produced from the reaction and 0.247g of copper was lost. Our original hypothesis was proven wrong, due to a miscalculation in stoichiometric equations which led us to the aproximate result of 1g of precipitate.

Molar calculations

One mole is equal to 6.02 times 10^23. This number was introduced by Amedeo Avogadro to simplify a unit of atoms. An element's atomic weight is how many grams of weight are present in one mole of that atom. Percentages of elements present in a molecule of a substance, such as aluminum chloride, can be found by going through some simple mathematical steps; as shown below:

Popcorn lab

Purpose: find out how much of unpopped popcorn kernals' mass is made up of water.
Hypothesis: When popcorn kernals are popped, atleast one third of the total mass of the kernals will be lost due to loss of water caused by high temperature.
Materials: Glass beaker, vegetable oil, unpopped popcorn kernals, Bunsen burner, and foil.
Procedure: First, weigh the popcorn kernals and record the total weight befor reaction takes place. Next, fill the glass beaker with a small amount of oil to pop the kernals in. Put kernals in the beaker and cover the top with aluminum foil to keep heat inside the beaker. Poke holes in the foil to let pressure from the heated air escape. Then, place the beaker above a bunsen burner so that the flame heats the beaker evenly. Light the flame and wait for the kernals to pop. Then, remove the popped kernals and weigh them and record the difference in weight.
Results: One gram of weight was missing from the kernals.
Conclusion: The original hypothesis of one third of weight being lost from the reaction proved false. Though only a small amount of weight was lost from the lost water from the kernals, it was still apparant that the weight difference was caused by evaporated water trapped in the kernals. Based on the original weight of 6.5g of the kernals and the loss of 1g from teh experiment, it can be calculated that about 15.38% of the unpopped kernals' weight comprised of water.