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3 cze 2021 · This article illustrates worked examples of calculation questions that involve the concept of displacement volumes and its implication when preparing injectable dosage forms.
Calculate the displacement volume for a quantity of powder equivalent to the 250mg dose of drug X. If there is 250mg in each 5mL dose, 100mL has 20-times this – that is to say, 5,000mg. If 68mL is needed, it means 5,000mg displaces the remaining 32mL of water.
Key Concepts. A submerged object displaces a volume of liquid equal to the volume of the object. iter (1 mL) of water has a volume of 1 cubic cen. Different atoms have different sizes and masses. Atoms on the periodic table are arranged in order according to the number of protons in the nucleus.
18 lip 2015 · To calculate displacement value of drug. I have six simple steps for you: Step I: Theoretical weight of total Base. required. Step II: Theoretical weight of total drug. required. Step III ...
21 cze 2016 · Learning objectives. By the end of this chapter you will be able to: express a liquid in either weight or volume using density values. define and use the term ‘displacement value’. Define and use the term ‘displacement volume’. calculate the amount of base required when making suppositories and pessaries. At 20°C, 1 mL of water weighs 1 g.
Measure the mass and volume of different metals, using a balance and the method of water displacement. Show that the relationship between mass and volume is a constant for each unknown metal. Compute the density of each metal from its mass and volume. Draw conclusions and make predictions about the densities of different substances, based on data.
This is a sample problem that primarily deals with density, the displacement method for volume, and unit conversions.
