M = mol solute/ L solution
Okay, looked density up:
D = g solution/ mL solution
...Oh, well, it looks like the density is no longer useful to me for converting from mL to g! :/
What's the point of knowing that 2.7mL of methyl benzoate with a density of 1.0837g/mL has a mass of 2.9g?
The mass means: 2.9g = solute mass + solvent mass, right? :/
Hm. So, there is no way to know the solute mass from only the density and mL of solution, right?
...Well, how then am I supposed to calculate the limiting reagent from lab...?
They only told us we have 2.7mL methyl benzoate, 3.0mL concentrated nitric acid, 3.1mL concentrated sulfuric acid, etc.
"Concentrated" does not tell me the exact molarity to figure out the grams of solute! #=_=
Edit: The ONLY thing different I notice when reading through the lab again is this sentence: "Using a glass pipet, slowly add 3.0g of methyl benzoate (2.768mL) to the cooled sulfuric acid solution."
I actually used 2.7mL of the methyl benzoate solution.
Does the 3.0g mean that there are 3g of methyl benzoate solute per 2.768mL solution, OR does it mean that 2.768mL of solution has a weight of 3g (3g = mass of methyl benzoate + mass of solvent)
If the first was correct, I could say:
(3g / 2.768mL) = (x / 2.7mL)
x = 2.93g of methyl benzoate solute
If the latter was correct, I still couldn't figure out the grams of methyl benzoate solute...