7. In this experiment, if the sucrose concentration were increased to 70 g/l would you expect sucrase activity to be significantly higher than the activity at 35 g/l. Explain your answer. No, because based on the results once it reached 30 g/l 35 g/l the results had stayed the same. There, the activity is lessening and coming to what looks like a plateau.
The increase of the catalyst molar ratio to 0.05 and 0.10 mmol caused improvement in the rate of 1,2-cyclooctene oxidation with higher conversion compared to the catalytic amount 0.02 mmol of the VO-complexes. Unfortunately, the chemoselectivity was reduced by increasing the amount of the catalyst VO-complexes to be 65,
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.
Also, the data shows that there is a very large difference between the amounts of oxygen released by the varying pHs, even though the difference in pH is not so great. For example, between pH 5 and 7, there is an almost 500 mL difference, even though they are only 2.0 away on the pH scale. This shows even small changes in pH can have a large difference in the rate of reaction. Evaluation of Conclusion: The data and conclusion does match with previous background research. Background research suggests that reaction rate increases with pH until a point where optimum pH is reached, after which the enzyme is denatured and no longer can perform its function.
The extent of reaction was found to decrease with an increase in temperature from 50 to 60ºC. Because at high temperature, the active site of the enzyme got denatured and no more accessible for distinguish substrate 25. However, with an increase in the enzyme amount above 2 %, decreases the percentage conversion. This can be attributed to disruption of enzyme tertiary structure and denaturation at high temperature
Cell nucleation density as high as 1014 cells/cm3 were obtained for saturation temperature of -100C for which CO2 concentration was 14.7% whereas for a saturation temperature of 600C the nucleation density was 109 cells/cm3 where CO2 concentration was 5%. With an increase in cell nucleation density, the cell size is expected to decrease. This is seen from the following
The frequency sweep test was done at 7 temperatures: 10,20,30, 40, 50, 60 and 70ºC and 10 frequencies at each temperature. The frequencies selected were 37.5, 30, 25, 20,15,10,5, 1, 0.5 and 0.1 Hz. The 8mm diameter plate was used to test the sample from 10 -30ºC and 25mm diameter plate was used for temperatures greater than 30ºC. The data obtained through experimentation are shifted by temperature along the logarithmic frequency axis to form a continuous curve. The time - temperature shift factor can be expressed as
Aim: Therefore the aim of this experiment is to investigate the effect of increasing temperature on the activity of the enzyme catalyst. Hypthesis: The froth volume increases as temperature goes up until an optimum point of around about 40C and after that point the enzyme is denatured and the graph starts to decline. Experimental Procedures Variables The independent variable that is changed and controlled specifically to test the effect of the independent variable on the dependent variable is the temperature of the hydrogen peroxide and the liver, which affects the froth volume, which is the dependent variable. Constant variables in this experiment was the size of the liver, the amount of hydrogen peroxide and the time the volume was measured. The size of the liver could increase the
The purpose of this experiment was to analyze the rate of the catalyzed decomposition of hydrogen peroxide in regard to the effects of concentration and temperature. 2H2O2 (l) —I-—> 2H2O (l) + O2 (g) In part one of the experiment, catalyst KI was added to varying solutions of 3% hydrogen peroxide and DI water and the composition of hydrogen peroxide was observed. This was observed by collection the volume of oxygen gas produced during the decomposition, and measuring its volume. From that, volume of oxygen gas produced was plotted against time and a linear least square fit line was generate. From the line equation, rate was derived, rate is equal to the slope of the line.
For example, If 2.24L of oxygen gas at STP has given, then it can be easily conclude that the volume would contain one tenth of the mole of oxygen gas. That is, total number of 6.022 x 1022 molecules of oxygen will be present. CONSEQUENCES OF AVOGADRO'S LAW There are a few important consequences of Avogadro's law The molar volume of all ideal gases at 1 atm pressure and 0°C is 22.4 L the volume increases. the amount of gas increases, only If temperature and pressure of a gas are constant when the volume decreases and amount of gas decreases, If pressure and temperature of a gas are constant. The fallowing graph shows the relationship between mass (n) and volume (v) as shown in Avogadro's Law.