Homework Help: chemistry

Posted by Lisa on Friday, May 2, 2008 at 1:06pm.

Calculate the molarity of a solution in which 0.75 moles of a solute are dissolved in 125g of solution (density of solution = 1.05g/mL).

I did this much:
1.05 * 1L/1000mL = 0.001 L

I don't really know what to do.

chemistry - DrBob222, Friday, May 2, 2008 at 1:10pm
What you did isn't much help. I don't understand it.
molarity = mols/L of solution.
you know mols. Use the density to convert 125 g solution to volume (liters) of solution.
chemistry - Lisa, Friday, May 2, 2008 at 1:25pm
v = m/d
v = 125g/1.05 g/mL
v = 119.mL

Then I converted mL to L
119 mL x 0.001 L/1mL = 0.119 L

Then,
M = mol/L
M = 0.75 mol/0.119 L
Final answer: 6.3 mol/L
chemistry - DrBob222, Friday, May 2, 2008 at 7:56pm
That's my answer, too.

Answer this Question

Related Questions

Chemistry - Calculate the molarity of a solution in which 0.75 moles of a solute...
Chemistry - An aqueous solution is 8.50% ammonium chloride, NH4Cl, by mass. The...
chemistry - A solution of HCI has a density of 1.18 g/ml and is 36% (m/m). what...
Science - I need to calcuted the molarity from this 12.5 g of ethylene glycol ...
Ap Chemistry - A perchloric acid solution is composed of 168.75 g of perchloric ...
chemistry - What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2...
chemistry - What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2...
chemistry - What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2...
Chem - I need to calcuted the molarity from this 12.5 g of ethylene glycol ...
12th grade - A perchloric acid solution is composed of 168.75 g of perchloric ...

For Further Reading

First Name:
School Subject:
Answer: