18 Questions
What is the molar mass of HCl?
36.47 g/mol
What is the molality of a solution containing 15 g of HCl in 400 g of water?
1.03 mol/kg
How many grams of Mg(OH)2 are needed to prepare 0.4 m solution, using 550 g of water, H2O?
15.5 g
What is the molarity of a solution that contains 10.0 moles of solute in 2000.0 mL solution?
4.0 M
What is the mass of sucrose (C12H22O11) needed to prepare 250.0 mL of a 0.250M solution?
12.5 g
What is the units of molality?
moles per kilogram
What is the concentration unit that represents the mass of solute in grams present in 100g of solution?
Percent by mass
What is the term used to describe a solution that contains a large proportion of solute relative to the solvent?
Concentrated
A 0.5M solution of NaCl is prepared. What is the number of moles of NaCl present in 1L of this solution?
0.5
A solution contains 20g of NaCl in 100g of water. What is the percent by mass of NaCl in this solution?
20
What is the unit of concentration that represents the number of moles of solute per kilogram of solvent?
Molality
A 2M solution of NaCl is prepared. What is the mass of NaCl present in 1L of this solution?
117g
What is the formula to calculate the percentage of a solute in a solution by mass-volume?
mass of solute / volume of solution × 100
A 20% (m/v) solution of sodium chloride is prepared. What is the mass of sodium chloride in 250 mL of this solution?
50 g
What is the difference between molarity and molality?
Molarity is the number of moles of solute per liter of solution, while molality is the number of moles of solute per kilogram of solvent.
What is the concentration of a solution in which 2.5 g of sodium nitrate is dissolved in 0.05 kg of water?
5% (m/m)
A 30% (v/v) solution of ethylene glycol is prepared. What is the volume of ethylene glycol in 200 mL of this solution?
60 mL
What is the molar mass of glucose (C6H12O6)?
180 g/mol
Test your understanding of solutions and concentration in chemistry. This quiz covers the different ways of expressing concentration, stoichiometric calculations, and the importance of understanding concentration in reactions. Review your knowledge and improve your skills!
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