I am doing a lab. I have two test tubes filled with 10mL of tap water. The next step is "Mass 0.llg of sodium carbonate and 0.25g of copper sulfate, and add each to the proper test tubes." My scale will not allow me to measure in that deatale. What am I supposed to do to make it measurable? By the way this is a lab on Stoichiometry. I am measuring the precipitate. I would ask my teacher but am home schooled.
2006-12-15 06:50:06 · 3 answers · asked by bushcanaca 1 in Science & Mathematics ➔ Chemistry
Add 1g of sodium carbonate to 90 mL of water and draw off 10 mL for the first test tube.
Add 1g of copper sulfate to 40 mL of water and draw off 10 mL for the second.
This way, the concentrations will be right.
2006-12-15 07:05:59 · answer #1 · answered by computerguy103 6 · 0⤊ 0⤋
Multiply the grams of sodium carbonate and grams of copper sulfate by the same number to give you a mass you can measure. Then multiply the volume of water by the same amount. I'm guessing you can measure as little as a gram so if you multiplied everything by 10 you could still do the lab. You'll just have a lot more.
Another suggestion - contact your local high school and see if they could lend you a balance to use for the lab. Make sure you are following all safety precautions especially wearing chemical splash goggles!
2006-12-15 21:10:40 · answer #2 · answered by The Old Professor 5 · 0⤊ 0⤋
Do your own homework.
2006-12-15 15:13:32 · answer #3 · answered by julie 5 · 0⤊ 0⤋