9. Solutions

Calculate mass (grams) needed for the following ion equivalent:1.5 mEq of Na⁺ ions.

The concentration of Cl^- ion in blood is approximately 105 mEq/L. How many milliliters of blood would be needed to obtain 1.4 g of Cl^- ions?

An intravenous saline solution contains 140 mEq/L of Na⁺. How many mEq of Na⁺ are present in 750 mL of the solution?

Calculate the normality (mEq/L) of potassium ions in a 500 mL Ringer's solution that is 2.0 x 10^-3 M in potassium ions.

Calculate the number of equivalents in each of the following:

d. 3 moles of CO₃^2–

Calculate the number of equivalents in each of the following:

d. 2 moles of Fe³⁺

An intravenous saline solution contains 154 mEq/L each of Na⁺ and Cl^–. How many moles each of Na⁺ and Cl^– are in 1.00 L of the saline solution?

An intravenous solution contains 40. mEq/L of Cl^– and 15 mEq/L of HPO₄^2–. If Na⁺ is the only cation in the solution, what is the Na⁺ concentration, in milliequivalents per liter?

The typical concentration of Mg²⁺ in blood is 3 mEq/L. How many milligrams of Mg²⁺ are in 250 mL of blood?

When Michelle's blood was tested, the chloride level was 0.45 g/dL.

b. According to TABLE 9.6, is this value above, below, or within the normal range?

A typical oral rehydration solution (ORS) for infants contains 90 mEq/L Na⁺, 20 mEq/L K⁺, 110 mEq/L Cl^– and 2.0% (m/v) glucose (MW = 180g/mol).

b. What is the osmolarity of the solution, and how does it compare with the osmolarity of blood plasma?

A typical oral rehydration solution (ORS) for infants contains 90 mEq/L Na⁺ , 20 mEq/L K⁺ , 110 mEq/L Cl^- , and 2.0% (m/v) glucose (MW = 180g/mol)

a. Calculate the concentration of each ORS component in units of molarity.

What does it mean when we say that the concentration of Ca²⁺ in blood is 3.0 mEq/L?

Calculate the mass needed for each of the following ion equivalents:

a. 0.25 Eq Ca²⁺

The concentration of Cl^- ion in blood is approximately 100 mEq/L. How many milliliters of blood would be needed to obtain 1.0 g of Cl^- ions?