Relative Density Essay

AbstractThe experiment about relative stringency is composed of three different activities. The root activity is about the Displacement Method for alloy, the second activity is about getting the density of a bone and the third activity is about fastness versus Diet Soft Drinks.1. IntroductionRelative density is the ratio of the density (mass per unit volume) of a substance to the density of a given reference material. The surmisal or the principle that we apply for the experiment is the Archimides Principle which states that any fluid a buoyant force to an object that is partially or completely immersed in it the magnitude of the buoyant force equals the weight of the fluid that the object displaces. In the experiment we used different formulas. For activity 1 (g) mass of the substance which is Aluminum, (cc) sign level of water, (g/cc) for the experimental value, magnitude of buoyant force pic= Wfluid which is weight of displaced fluid. For activity 2 we used formulas for gett ing the relative density of the bone.For experiment 3 we used formulas like2. TheoryActivity 1 Displacement Method for AlloyThe Aluminum measuring rod was weighed and its mass was recorded. Some water was placed into a gradational cylinder and the initial water level was recorded. The Aluminum bar was placed inside the cylinder and the new water level was recorded. The volume of the Aluminum bar was computed by subtracting the initial water level from the resulting water level. The density of the Aluminum bar was computed by dividing its mass by its volume. The calculated density was compared to the standard density (2.7 g/cc) and the % error was taken.Activity 2 Density of a BoneA piece of bone was weighed in air and in water, each discipline was recorded as the weight of the bone in air and weight of the bone in water The Relative Density of the bone was then computed by victimization the formula given. The density of the bone was then computed by multiplying the Relative densit y of the bone to the density of the water. The status of the bone was identified by referring to the WHO s definition of the diseases a bone can have relative to its own density.Activity 3 Regular versus Diet Soft DrinksThe weight of an empty pycnometer, the pycnometer fill up with water, pycnometer filled with regular coke, pycnometer filled with coke light, and pycnometer filled with coke zero. The relative density of regular coke, coke light, ad coke zero was computed by using the formulas given.4. Results and DiscussionTable 1 show the results from activity 1, table 2 for activity 2 in activity the finding is that the bone has osteopenia it is or suffering bone mass because the density of the bone is within 1.0 to 2.5 and table 3 for activity 3.