Again we will use ρ=m/V in order to calculate the density of water. Experimental technique The first part of experiment is done in following steps: The second part of experiment is done in following steps: Results The density of water by using hydrometer: 1. 26.5 °C room temperature 2. 37.8 °C and 36.3 °C 30-40 °C 3. 41.7 °C and 40.2 ° C 40-50 °C 4.
The ideal gas law, followed by a mole ratio were then used to calculate the volume of one mol of H_2 at ambient conditions. After that, the combined gas law was used to calculate the volume of one mol of H_2 at STP. Before calculating the experimental gas constant, the volume of air space in the flask was calculated, using the volume of empty air space in the flask and the 5 mL of HCl. Result calculations for all trials are shown in “Table 2”. (0.0107 g Mg)/1×(1 mol Mg)/(24.305 g Mg)=(4.40×〖10〗^(-4) mol Mg)/1×(1 mol H_2)/(1 mol Mg)=4.40×〖10〗^(-4) mol H_2 23.63 ̊C + 273.15 K = 296.78 K (8.1 kPa)/1×(1 atm)/(101.325 kPa)=0.0799
hot end (11). The control valve (needle valve) controls the flow rate of the hot air (11). Two rotameters (Eureka made) (6) measures the mass flow rates of the hot and cold air. Thermocouples numbered (7) measure the temperature of the leaving cold and hot air in the vortex tube. The pressure of inlet gas is measured by pressure gauge (2) and the temperature of inlet gas is measured by thermocouple (7).
Some of the factors are thermometer was calibrated to determine its precision. The actual melting points of water, phenylacetic acid, o-anisic acid, and benzilic acid to their observed melting points were determined by calibrated thermometer. Then the solubility tests were run in order to determine the appropriate solvent for the unknown solute (Table 1). After determination of a solute, a vacuum filtration technique was used to determine the pure form of compound. The melting point of the purified sample was determined and compared to the melting points of other known compounds.
We set those materials in a neat, orderly fashion on our table. Next, we put on our safety goggles. Next, we placed one Magnesium metal ribbon into the 125 milliliter Erlenmeyer flask and we poured 20 milliliters of hydrochloric into the graduated cylinder. Then we placed the 125 milliliter Erlenmeyer flask with the magnesium, the rubber stopper, and the graduated cylinder with 20 milliliters of hydrochloric acid onto a scale. After we got the different masses, we added them up until we got a final total and we put that mass into a table.
We can assume that the mass was very slightly decreased because of the gas created when the two were mixed but not significant enough for the scale to pick up. The mass staying the same shows that mass was not added or destroyed. The chemical equation is Mg+2 HCI→MgCl2+H2. Experiment 2 In experiment two a folded strip of white paper was placed on a circular piece of glass. The paper and glass had a combined mass of 29.1 grams before the experiment.
However, when this liquid to the reservoir, it contains a higher ratio of the more volatile substance than it did originally. This is repeated numerous times in the fractional distillation column and each time the liquid vapourizes, the vapour increases in purity. Eventually, the vapour contains only the most volatile substance and it is condensed and
Mass is how much material an object has. (Singh, Lakhmir, 2012) It is the only variable that will be changed throughout the experiment. The dependent variable is what one observes or measures. The dependent variable in this experiment is the tangential velocity. The relationship of tangential velocity and the mass of the object will be observed
Simple calculations based on gram mole theory We have learnt above how the quantities expressed in volumes can be converted into weights for the process calculation requirement. Liquid and slurries are always required to be measured in volume also apart from kilograms because the volumetric flow’s and the volumetric capacity measurements are extremely necessary to design the chemical plant equipments. If the material in question is a solid material, then it can best be expressed in weight. For example 100 kilograms of sodium carbonate flakes. Weight is the most common term to express the quantity of a mass of any matter.