Homework Help: chemistry

Posted by cheri on Thursday, September 13, 2012 at 5:20pm.

We have an aqueous solution that contains
47% (by mass) of a hypothetical solute Z. The
formula weight of the solute Z is 209 g/mol.
The density of the solution is observed to be
1.3 g/mL. What is the molarity of Z in this
solution?
Answer in units of mol/L

chemistry - DrBob222, Thursday, September 13, 2012 at 6:22pm
1.3 g/mL x 1000 = ? g = mass of 1L soln.
?g x 0.47 = ? g Z in the L.
mols Z = ?g Z/209 = ? mols in that L; therefore that is the M in moles/L.

Answer this Question

Related Questions

AP chemistry - We have an aqueous solution that contains 22% (by mass) of a ...
chemistry - Which of the following can be determined if the boiling-point ...
chemistry - determine the amounts of solute and solvent needed to prepare the ...
Chemistry - An aqueous solution is 8.50% ammonium chloride, NH4Cl, by mass. The...
chemisty lab - determine the amounts of solute and solvent needed to prepare the...
Chemistry Lab - Which of the following would NOT be a factor for a solute to ...
Chemistry Lab - Which of the following would NOT be a factor for a solute to ...
Chemistry - 1. What is the percent by mass of a solution that contains 50 grams ...
chemistry - A dilute aqueous solution of CaCl2 contains 0.159 grams of solute ...
chemistry - If an aqueous solution is 1.54 % by weight in sodium chloride and ...

For Further Reading

First Name:
School Subject:
Answer: