A glucose solution that is prepared for a patient should have a concentration of 180 g/L. A nurse has 18 g of glucose. How

many liters of water should she add to the glucose to obtain the required solution?

Use g/L

grams of solute

/

liter of solution

0.010 L

0.10 L

3.2L

10. L

0.10 L

Explanation:

The concentration of glucose is given as 180 g/L

The mass of glucose is 18 g

Concentration in g/L is calculated by dividing mass of the solute by the volume of the solution. When calculating molarity on the other hand, we divide number of moles of the solute by the volume of the solution. Concentration in g/L = Mass of solute : Volume

Rearranging the formula,

Volume = Mass of the solute : concentration

= 18 g : 180 g/L

= 0.10 L

Therefore, volume of water is 0.10 L