15 Questions
What is the correct molarity of a solution containing 0.225 moles of sodium chloride in 2.80 liters?
0.0804 M
In Problem 2, what is the molar mass of sodium chloride?
58.44 g/mole
What is the correct molarity of a solution with 158 grams of sodium chloride in a volume of 2.50 liters?
1.08 M
How many moles of sodium chloride are in a solution containing 298 grams in a volume of 175 milliliters?
5.10 moles
What is the correct molality of a solution with 298 grams of sodium chloride in a solvent weighing 1.20 kilograms?
4.25 m
What is the molarity formula based on?
Moles of solute and liters of solution
How is the molar mass of a substance calculated?
Summing the atomic masses of each element in the molecular formula
In the molecular formula N2 O5, what is the molar mass of this substance?
108.02 g/mol
How can the moles of a substance be determined if given the grams of the substance?
By multiplying the mass in grams by the molar mass
What does successful problem solving in chemistry require?
Taking a structured approach
What is the molality of a solution containing 298 grams of sodium chloride in a solvent weighing 375 grams?
13.6 m
When preparing solutions in a laboratory, which concentration unit is typically used?
Molarity (M)
What is the drawback of using molarity as a concentration unit?
Volume changes affect calculated solute concentration
Which technique would most likely require the use of molality over molarity?
Determining the freezing point depression of a solution
How does a change in temperature affect molality compared to molarity?
Molality remains constant with temperature change, molarity fluctuates
Learn about molarity, an expression of solute concentration that uses moles of solute and liters of solution. Explore the molarity formula and understand the roles of solute, solvent, and solution in chemistry.
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