The aim of the investigation was to determine the effect of pH on the rate at which catalase decomposes hydrogen peroxide and consequently answer the researchable question “How does pH influence cells and consequently an organism”. The hypothesis, “As the pH deviates from 7 the initial rate of oxygen production will decrease” is supported by the results. The trend displayed in Figure 3 is, as the pH deviates from 7 the initial rate of reaction decreases. Figure 3 shows that the rate of reaction (%O2/s) decreases substantially as the pH increases and decreases to 8 and 6 respectively from a pH of 7.
So latent heat of fusion is also the enthalpy of fusion of a substances and molecule, or in another words is the changes of enthalpy of a substances or molecule when it starts to melt. The solid phase has a lower internal energy than the liquid phase, so energy is needed for a solid to melt into liquid (En.wikipedia.org, 2016). Phase transition is used to describe substance changes from
Figure 1 Interpretation of the data Graph 1 indicates that as the dry mass of the water rocket increases, the maximum altitude it can reach when launched decreases. The R2 value, which indicates the strength of the correlation between two variables, where one indicates perfect correlation and zero indicates no correlation, in this graph is 0.989. Moreover, the correlation is negative, which can be seen from the coefficient of the X in the equation (-40.667x+ 30.02). For every gram the rocket’s mass increases the maximum height gets reduced by 0.0407 meters. This specifies that as the dry mass of the water rocket increases, the maximum height it can reach decreases.
As shown in Fig. 4, the system COP increased first and then decreased with the generating temperature increasing and there existed a maximum value of 0.277 at Tg = 63 °C. The variation tendency of the cooling capacity was similar to that of the system COP, but the maximum value of 734.4 W at Tg = 67 °C. The total pressure of the primary flow in the nozzle was relatively low with the generating temperature set under these conditions. The reason for the
Similar results were reported by Suzuki and Yoshikawa  and Morgado et al.  in the thermal stability study on titanate nanotube. The diffraction peak (at 2θ=27.5°) related to added CN was not observed in the PXRD pattern, because it is merged with the TiO2 (B) phase peak at 28.6°. Further the intensity of peak at 28.6° is increasing with increase in the amount of CN loading. Similar to x%-CN/TNP composite, anatase peak of TNT at 25.3° is shifted to lower diffraction angle (Inset of Fig.1b).
7. Will the temperature effect the pH Scale? Hypothesis: The hypothesis of this experiment is that the rate of reaction will increases well as the hydrogen peroxide concentration. If the temperature, pH and enzyme concentration is kept constant then the rate of reaction will start to decrease as well as the hydrogen peroxide concentration. Aim: To investigate the effects of changing the concentration of the enzyme catalase that it has on the rate of breaking down the Hydrogen Peroxide solution.
With the reactions that the group did in this experiment the equilibrium changes wherever in order to balance the ratio between the products and reactants. The system changes in favor of the side with the least amount of stuff. When the group added heat to the system resulted in a decrease in the concentration of FeNCS2+. When the increasing the temperature it the reverse reaction of the system was the take away the heat. In the ice bath, the opposite was observed.
Furthermore, the confinement time, which is a measure of how quickly power is lost to the environment is given by τ_E= W/P_loss where W is the energy density and Ploss is the energy loss rate per unit volume (Lawson, J. “Some”). Finally, by taking the volume rate, which is a function of the number of reactions per volume per time, and multiplying by the charge of the particles, we get a quantity that we know must be greater than the power loss, per the initial criterion (Lawson, J. “Some Criteria for a Useful”). Doing some algebra, we can then reduce to the expression 〖nτ〗_E≥L T/σv where L is a constant, T is the temperature of the system, σ is the nuclear cross section, or chance that two particles have to collide, and v is the relative velocity of the two particles. Multiplying both sides by T then gives the triple product as a function of temperature.
As a result, the number of carbons in a straight chain alkane increases, alkanes become less flammable. Alkane’s volatility decreases with the increase of the number of carbons in the chain. Volatility refers to the ability of a liquid to change into a vapour state which is the state that substances burn in. Propane’s Properties . Being odourless and colourless, propane follows the chemical properties of an alkane. The chemical properties of propane are directly linked to its structure and intermolecular forces.
This occurs because the sample vaporized into the gas phase and is placed into a capillary under controlled temperature and pressure. As the mobile phase and is placed into the capillary under controlled temperature and pressure. As the mobile phase is flowed through the capillary, more volatile compounds should elute first. Accordingly, the alcohol should elute last, preceded by the alkyl halide.
The graph 1 shows the buffer capacity of buffer 1 is at pH 4.559 as it takes about 7.5 mL to change the pH. Whereas the buffer capacity of buffer 2 is at pH 4.756, which takes 5.9 mL to change the pH. These number shows buffer 1 has higher buffer capacity. The pH at 4.559 is significant as once the pH exceeded this value, the buffer will become ineffective.
If the temperature is dropping and the dew point is holding steady, what is your forecast for the relative humidity? Explain your answer. The relative humidity would increase if the temperature dropped and the dew point remained steady. Cooled air is unable to retain much moisture and saturates the air, therefore it increases the relative humidity. If the temperature decreases, the relative humidity will increase as a result in this situation.
It shows how heat travels from the inner core to the other layers of the Earth. When heat reaches the layers it changes their densities. When the density changed it made the particles rise to the top since it became less dense like the particles in the asthenosphere. Eventually they would become more dense since they were away from the heat source which would make the particles sink to the bottom and start the whole process start over again. After doing the Density Reading it showed us that when atoms or particles get heated they spread apart which make them less dense.
Based off the observations created in this lab, the following conclusions have been made in terms of single displacement reactions. Whether or not these types of reactions proceed can be predetermined by using the activity series. If the lone metal in the left side of the equation is above the second metal in the reactant compound then a reaction will take place. However, if it is not then the reaction will not occur.