Ontario Registered Pharmacy Technician (RphT) Practice Exam

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An IV order call for the addition of 45mEq of CaCO3 (Calcium Carbonate). You have a 25mL vial of CaCO3 4.4mEq/mL. How many mL do you have to the IV?

  1. 5.6mL

  2. 8.4mL

  3. 10.2mL

  4. 12.8mL

The correct answer is: 10.2mL

The other options are incorrect because they do not accurately reflect the calculations for determining the required amount of CaCO3 for the IV order. Option A is too low and does not take into account the full amount of CaCO3 needed. Option B is also too low and does not factor in the concentration of the vial. Option D is too high and does not consider the concentration of the vial. Option C is the correct answer because it takes into account the concentration of the vial (4.4mEq/mL) and the total amount needed (45mEq), resulting in 10.2mL needed for the IV order.