SCH3U Solutions Chemistry

After a long basketball practice, Brandon became really fatigued, light headed, and passed out. When he arrives at the ER, the doctors discover that he is extremely dehydrated and needs a saline IV to increase the ions in his body.

 

You are the head pharmacist at Centenary's Medical Center and need your pharmacy techs to prepare an IV solution for Brandon from the 2.0 M stock solution. He needs a 500.0 mL bogis (IV bag) of a 0.15 M saline solution. Saline IVs are mostly comprised of sodium chloride (NaCl) in a water-based solution. What volume should the pharmacy techs start with?

• 0.037 L

• 37.0 L

• 0.00060 L

• 6.7 L

The stomach bug has been very bad this flu season. Destiny unfortunately caught the bug and was vomiting for multiple hours. She became so dehydrated the went to the walk-in clinic near her house where they told her she would need an IV of D5W. D5W, or dextrose, is a sugar based solution that will help with Destiny’s low blood sugar and dehydration.

 

You are the head pharmacist at Toronto East Hospital and need your pharmacy techs to prepare an IV solution from the 1.5 M stock solution for Destiny. She needs a 250.0 mL bogis (IV bag) of a 0.28 M dextrose solution. D5W IVs are mostly comprised of sugar (C₆H₁₂O₆) in a water based solution. Use the provided information to calculate the volume the pharmacy techs must use to create the IV that is needed to help Destiny!

• 0.047 L

• 1.3 mL

• 47 L

• 0.47 L

Jamie rushed their 30 week pregnant partner, Alex, to the hospital with symptoms of preterm labor. Alex was immediately admitted and needed to receive an IV of Magnesium sulfate, or “mag,” which should slow the progression of their contractions.

You are head pharmacist at Mount Sinai Hospital and need your pharmacy techs to prepare an IV solution from the 6.00 M stock solution for Alex. Alex needs a 400.0 mL bogis (IV bag) of a 1.50 M mag solution. Mag IVs are comprised of magnesium sulfate (MgSO₄) in a water-based solution. What initial volume is needed to create the IV for Alex?

• 10 mL

• 0.10 L

• 1.6 L

• 0.60 L

A chemistry student prepares a solution by dissolving 0.250 moles of potassium iodide (KI) in a flask and diluting it to a final volume of 750.0 mL. What is the concentration of the resulting solution in mol/L?

• 0.200 M

• 0.333 M

• 0.576 M

• 0.750 M

A laboratory technician is tasked with preparing a copper sulfate (CuSO4) solution with a concentration of 0.10 M. How many grams of copper sulfate should be dissolved in water to make 500.0 mL of the solution?

• 100.0 g

• 50.0 g

• 75.0 g

• 25.0 g

In a chemical reaction, 0.050 moles of sulfuric acid (H₂SO₄) are required. If the stock solution available is 6.0 M, what volume of the stock solution should be used to prepare the required amount of sulfuric acid in a flask?

• 0.0083 L

• 0.083 L

• 0.83 L

• 8.3L