Chemistry: Concentration of Solutions

What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?

0.0253 M

How many moles of HCl are present in 0.70 L of a 0.33 M HCl solution?

0.23 mol

Which of the following is NOT used in preparing a 0.300 m aqueous solution of NaBr (molar mass = 102.89 g/mol) with 1.00 Kg of solvent?

0.300 mol water

What is the molarity of a solution that contains 125 g NaCl in 4.00 L of solution?

0.535 M

What is the molality of a solution that contains 5.10 mol KNO3 in 4.47 kg water?

1.14 m

An NaOH solution contains 1.90 mol of NaOH, and its concentration is 0.555 M. What is its volume?

3.42 L

You know that mass of solute and the volume of solution. What is the first step in finding the molarity of the solution?

Divide the mass by molar mass to determine number of moles.

Which of the following expresses concentration of a solution? A molality B molarity C percent concentration by mass D all of these are correct

all of these are correct

A 0.15 M solution of HCl reacts with an excess of calcium carbonate, CaCO3. A volume of 25.0 mL of HCl is used. To determine the number of moles of CaCl 2 produced, you need to know _____.

the balanced chemical equation for the reaction