Question

A doctor orders that a patient receive 1.35 x 10⁻³ mole of sodium chloride. The only solution available contains 2.60 g per 150 mL of solution. A mole of sodium chloride is equivalent to 58.5 g of sodium chloride. How many mL of this solution should the nurse give the patient?

a) 19.86 mL
b) 0.93 mL
c) 43.94 mL
d) 27.57 mL

Answer 1

To determine the mL of solution to give the patient, convert the mass of sodium chloride to moles and use the molar concentration of the solution.

Step-by-step explanation:

To determine how many mL of the solution the nurse should give the patient, we need to calculate the number of moles of sodium chloride in the desired amount. Given that 1 mole of sodium chloride is equivalent to 58.5 g, we can find the number of moles by dividing the given mass of sodium chloride by its molar mass. Then, we can use the molar concentration of the available solution to calculate the volume needed.

First, convert the mass of sodium chloride to moles: 2.60 g ÷ 58.5 g/mol = 0.0444 mol

Next, calculate the volume of the solution needed: (1.35 x 10^-3 mol) ÷ (0.0444 mol/mL) = 0.0304 mL ≈ 30.5 mL

Therefore, the nurse should give the patient approximately 30.5 mL of the solution.