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There is about $1.0 \mathrm{g}$ of calcium, as $\mathrm{Ca}^{2+}$, in $1.0 \mathrm{L}$ of milk. What is the molarity of $\mathrm{Ca}^{2+}$ in milk?

   There is about $1.0 \mathrm{g}$ of calcium, as $\mathrm{Ca}^{2+}$, in $1.0 \mathrm{L}$ of milk. What is the molarity of $\mathrm{Ca}^{2+}$ in milk?

Chemistry

Paul Flowers, Klaus… 2nd Edition

Chapter 3, Problem 57

Instant Answer

Solved by Expert Ernest Williams

10/10/2019

Step 1

0 \mathrm{g}$ of calcium. To do this, we need to use the molar mass of calcium, which is $40.08 \mathrm{g/mol}$. Number of moles of $\mathrm{Ca}^{2+} = \frac{\text{mass of calcium}}{\text{molar mass of calcium}} = \frac{1.0 \mathrm{g}}{40.08 \mathrm{g/mol}}$ Show more…

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There is about $1.0 \mathrm{g}$ of calcium, as $\mathrm{Ca}^{2+}$, in $1.0 \mathrm{L}$ of milk. What is the molarity of $\mathrm{Ca}^{2+}$ in milk?

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Key Concepts

Molarity

Molarity is a unit of concentration that represents the number of moles of a solute per liter of solution. It is fundamental for expressing how much of a substance is present in a given volume of liquid, which is crucial in preparing solutions and understanding reaction stoichiometry.

Molar Mass

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole. This concept is essential in chemistry as it allows the conversion from a given mass of a substance to the corresponding amount in moles, which is necessary for quantitative chemical analysis.

Mass-to-Mole Conversion

The mass-to-mole conversion is a process where the mass of a substance is divided by its molar mass to determine the number of moles present. This conversion is a critical step in many chemical calculations, such as determining concentrations and analyzing chemical reactions.

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