Recent content by Samantha

Does anyone know any sites with stoichiometry. I need to practice some questions.Site with practice problems and example that are easy to follow?

I tried it and I got 1.5g :smile: Thank you

I got the same equation but I don't get the calculations..I should work on that.

:confused:

ya i think i get it :redface:

How did you get that?

1. Is this right: Mol of AlCl3 = 0.112mol Mol of NaOH = 0.125mol mass = (0.112mol)(78.03g/mol) = 8.74g b)do I multiply 0.125 mol by the mols of 3NaCl. Then subtract 8.74 from the anwser?

I re-calculated it and it came out to 249.71g/mol??

copper(II) sulfate pentahydrate This is what I did: (molar mass of Cu * 2 ) + ( molar mass of S) + (molar mass of H * 5

are the others right? is this e)NH4ClO...amonium perchlorate

does the Molecular Weight of copper (II) sulfate pentahydrate = 164.21g/mol?

1. Aluminum chloride (15.0g) + sodium hydroxide (15g) = double displacement reaction.Predict mass of aluminum hydroxide produced. What mass of the excess reagent remains unreacted? 2. What mass of copper(II) sulfate pentahydrate is needed to prepare 150.0 mL of a 0.125mol/L solution...