help me about first-hand investigation,plz (1 Viewer)

[Sirius Black]

I gotta a project on 1st hand investigation but i am not quite familiar with the experiment report.
I have to test solubilities of three groups of substances in water (ionic:NaCl,soluble molecular:sucrose; insoluble molecular: cooking oil)btw, all the stuff u uesd must be commonly household materials.
I think mass should be the same for all the samples, right? but how to control the mass of these samples if u only allow to use normal household equipment?

thanx a lot

 

[pc_wizz]

hmm ...

how about being specific in what you use to measure the mass, like you can use standardised kitchen utensils, like the baking spoons ...

other than that im not sure ...


pcwizz

 

[jm1234567890]

not same mass, you should use same moles

 

[Sirius Black]

Originally posted by jm1234567890
not same mass, you should use same moles

but isn't it the formula for the solubility
mass of dissolved sample/ 100 g water?

 

[spice girl]

geez unless they ask for a quantitative analysis, i reckon you can get away with using the keywords "high" and "low", in describing solubility.