A Mass of 12 B) C) D) E)

question 46

Multiple Choice

A mass of 12.0 g of calcium chloride is diluted to a volume of 250 mL in a volumetric flask.Which of the equations below is a correct method for determining the chloride ion concentration?

• A) \(\frac{12.0 \mathrm{~g} \mathrm{~CaCl}_{2}}{250 \mathrm{~mL}}\left(\frac{1000 \mathrm{~mL}}{1 \mathrm{~L}}\right)\left(\frac{1 \mathrm{~mole} \mathrm{CaCl}_{2}}{111.0 \mathrm{~g}}\right)\)
• B) \(\frac{12.0 \mathrm{~g} \mathrm{~CaCl}_{2}}{250 \mathrm{~mL}}\left(\frac{1 \mathrm{~L}}{1000 \mathrm{~mL}}\right)\left(\frac{1 \mathrm{~mole} \mathrm{CaCl}_{2}}{111.0 \mathrm{~g}}\right)\left(\frac{2 \mathrm{~mol} \mathrm{Cl}^{-}}{1 \mathrm{~mol} \mathrm{CaCl}_{2}}\right)\)
• C) \(\frac{12.0 \mathrm{~g} \mathrm{~CaCl}_{2}}{250 \mathrm{~mL}}\left(\frac{1000 \mathrm{~mL}}{1 \mathrm{~L}}\right)\left(\frac{1 \mathrm{~mole} \mathrm{CaCl}_{2}}{111.0 \mathrm{~g}}\right)\left(\frac{2 \mathrm{~mol} \mathrm{Cl}^{-}}{1 \mathrm{~mol} \mathrm{CaCl}_{2}}\right)\)
• D) \(\frac{12.0 \mathrm{~g} \mathrm{~CaCl}_{2}}{250 \mathrm{~mL}}\left(\frac{1 \mathrm{~L}}{1000 \mathrm{~mL}}\right)\left(\frac{1 \mathrm{~mole} \mathrm{CaCl}_{2}}{111.0 \mathrm{~g}}\right)\left(\frac{1 \mathrm{~mol} \mathrm{CaCl}_{2}}{2 \mathrm{~mol} \mathrm{Cl}^{-}}\right)\)
• E) \(\frac{12.0 \mathrm{~g} \mathrm{~CaCl}_{2}}{250 \mathrm{~mL}}\left(\frac{1000 \mathrm{~mL}}{1 \mathrm{~L}}\right)\left(\frac{1 \mathrm{~mole} \mathrm{CaCl}_{2}}{111.0 \mathrm{~g}}\right)\left(\frac{1 \mathrm{~mol} \mathrm{CaCl}_{2}}{2 \mathrm{~mol} \mathrm{Cl}^{-}}\right)\)

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Definitions:

Portfolio of Suppliers

The diverse group of vendors and suppliers that a company utilizes to procure goods and services necessary for its operations.

Replenishment Lot Size

The quantity of stock ordered to replenish inventory, balancing order costs with storage costs.

Cycle Inventory

The portion of inventory that a company cycles through to fulfill its regular sales orders.

Indirect Materials

Materials used in the production process that do not become part of the final product, such as lubricants and cleaning supplies.