What Is the Concentration in Molarity of a Solution Made

question 10

Multiple Choice

What is the concentration in molarity of a solution made by dissolving 20.0 grams of KOH in 150.0 mL of H ₂ O  (molar mass of KOH = 56.1056 g/mol) ?

• A) 0.133 M
• B) 0.421 M
• C) 2.37 M
• D) 4.35 M
• E) 7.5 M

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Definitions:

Death Rates

The ratio of total number of deaths to the total population in a specified community or area over a particular period of time, often expressed per 1000 individuals.

Birth Rates

The number of live births per thousand individuals in a population per year.

Death Rate

The number of deaths per unit of population in a specific time period, used as an indicator of the health of a population.

Age Intervals

Defined periods or spans of time between specific age milestones used in studies or demographic surveys.