Sunday
November 23, 2014

Homework Help: Chemistry

Posted by Rachel on Saturday, January 22, 2011 at 1:55pm.

Can someone please check my work?

Calculate the mass of (NH4)2S2O8 needed to prepare 250mL of a 0.100M solution.
I got 5.705 g.

Calculate the volume of 2.00M KI needed to prepare 250mL of a 0.200M solution.
I got 0.025L or 25mL.

Calculate the volume of 0.100M Na2S2O3 needed to prepare 250mL of a 0.0100M solution.
I got 0.025L or 25mL.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - You are a work study student in our chemistry department. Amy, your ...
chemistry - Hydorgen peroxide may be prepared by the following reactions: ...
chemistry - 5.85g of sodium chloride is dissolved in 250mL of solution. ...
Chem - Calculate the volume of .300 M NaOH needed to prepare a pH=3.50 buffer ...
Chemistry - My prelab is telling me to find the initial concentrations of I(^-) ...
Chemistry - My prelab is telling me to find the initial concentrations of I(^-) ...
Chemistry - My prelab is telling me to find the initial concentrations of I(^-) ...
Chemistry - Urgent... Someone please help!! Can someone please check to see if I...
chemistry - Four solution are prepared and mixed together: Start with 100.0ml of...
Chem - Calculate the concentration of NH4+ from ammonium chloride required to ...

Search
Members