I am doing a lab for a chemistry class on density. I have the mass of heavy alumnium foil as 0.87g. Does anyone know what the mass of regular aluminum foil is? It is written on my piece of foil but I cant read it. It looks like 0.e2 grams??? It is 16.5 cm x 8.7 cm
Put it on a scale, or try to find the thickness of both pieces of foil so you can calculate the volume.
If e is a number than I am a sexually transmitted brick :P
i'm guessing it's lighter than the heavy foil, so e might stand for anything from the number 8 down to the number 2. it couldn't be 1 tho since i doubt even people with the worst hand writing could manage to make their 1 look like an e.... and there really isn't a standard mass for aluminum foil, there is a standard molecular weight for the element aluminum, but mass of the foil depends on the foil you have in your hands which you need to measure with a scientific balance/scale. every piece of foil weighs differently so no one else would know the mass of your foil except for the person who weighed it and recorded the data. my advice is if you don't get a chance to actually go back to the lab room and measure the foil yourself, the next best thing would be to ask another classmate and if their piece of foil is almost the same size as yours then just use their mass number. if you can't ask anyone, then the last resort would be to just assign a mass to your foil, say 0.62g, and calculate out the density correctly. the primary purpose of these types of labs is to let you to practice how to calculate density with the m/v formula, so as long as you know how to use that formula, the actual numbers you are using are not as crucial... it was not your fault that you couldn't read the mass number on the foil, the person who wrote it didn't make it clear enough to be read. so note that on your lab when you turn it in (write a little note on the margin of the page explaining how you substituted a mass because you can't read the original and didn't have time to measure it), and your prof should at least give you partial credit for your work. the best thing still, is to get the mass from someone else or measure the foil on a balance yourself.
