Multiple Choice
In general chemistry, molarity is a measure of which quantity?
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6. Chemical Quantities & Aqueous Reactions
Molarity
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Which of the following is a unit of concentration (as used in molarity calculations)?
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Verified step by step guidance1
Understand that molarity is defined as the number of moles of solute per liter of solution, so its unit is expressed as moles per liter.
Examine each given unit option and identify what physical quantities they represent: for example, atm/mol is pressure per amount of substance, L/s is volume per time, and g/mol is mass per amount of substance.
Recall that concentration units must relate the amount of solute (in moles) to the volume of the solution (in liters), matching the definition of molarity.
Recognize that the unit mol/L (moles per liter) directly corresponds to molarity, as it expresses how many moles of solute are present in one liter of solution.
Conclude that among the given options, only mol/L is a valid unit of concentration used in molarity calculations.
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