Why do you think the plot was not linear? (Hint: Look at the relationship of the variables in the equation.) How well did the results compare with your prediction? The increase in radius resulted in an increase flow rate, as predicted. ACTIVITY 2 Studying the Effect of Blood Viscosity on Blood Flow Rate 1.
Once more alkali is added to this, the solution will begin to increase again in pH, going up to 12 – 14, and being blue/purple in colour through testing with indicator. This would be because there would then be more OH- ions. Hypothesis and prediction: Concentration of an acid affects the pH during a titration. As the concentration of the acid increases, I predict that the volume of alkali needed to change the pH to reach an end point will also increase. I also predict that doubling the concentration of acid will require double the amount of alkali to reach an end point.
Angiotension II causes vasoconstriction, which raises the blood pressure. Angiotension II also stimulates aldosterone release from the adrenal gland. This leads to increased sodium reabsorption by the kidneys, which causes water to follow it, which then increases intravascular volume. The increased vasoconstriction and increased blood volume raise the blood pressure. Additionally, the perceived hypovolumic status causes the release of antidiuretic hormone (ADH) from the posterior pituitary.
The second one could have iron +2 and copper +2. The third one could have used iron +3 and copper +1 and the last one could have iron +3 and copper +2 There are several factors that can influence the rate of a chemical reaction. In general, a factor that increases the number of collisions between particles will increase the reaction rate and a factor that decreases the number of collisions between particles will decrease the chemical reaction rate. The factors that can influence the rate of a chemical reaction are: the concentration of reactants, the temperature, the medium and the presence of catalyst and competitors. The higher the concentration of reactants is, the higher the rate of a chemical reaction is.
The more CO2 produced over this time, the higher the rate of reaction. In this equation, there are 3 possible independent variables: a) changing the size of the marble chips (e.g. large, small, powdered) whilst keeping the mass the same, b) changing the mass of the marble chips whilst keeping the size the same (e.g. all powdered), or c) changing the concentration of the hydrochloric acid. In equation 2, the hydrogen is measured by the loss of mass.
As the temperature increases the molecules within the beetroot are given more kinetic energy and thus the process of diffusion is speeded up. From 40°C to 62°C there is a sudden increase in the absorbency reading, which indicates that the cell the cell walls of the beetroot are being denatured. For example, at 40°C the mean absorbency was 0.197 compared to the 62°C were the mean absorbency was 1.704. as the
Many symbols are shown on everyday used items, the ststem was made to keep everyone safe, and it is attended by many. There are a wide variety of symbols used to show what the chemical is capable of and what it can due. For example there is the poison symbol. Which is crossbones, his is the most dangerous of them all. If you are exposed to this chemical you can either go blind if it goes in your eyes or possibly die.
If it does not melt, increase the time in the flame. If the solid melts under this increased heating, record it as medium melting. In the event the solid does not melt, record it as high melting. 3. Solubility- First, the solubility test was carried out in distilled water.
a. decreasing the temperature b. changing the concentration of A c. changing the concentration of B d. changing the concentration of C e. letting the reaction go on for a long time 4. The gas phase reaction A + B C has a reaction rate which is experimentally observed to follow the relationship rate = k[A]2[B]. If the concentration of A is tripled and the concentration of B is doubled, the reaction rate would be increased by a factor of ____. a. 6 b.
So, it makes sense that the speed of sound has the same order of magnitude as the average molecular speed between collisions. In a gas, it is particularly important to know the temperature. This is because at lower temperatures, molecules collide more often, giving the sound wave more chances to move around rapidly. At freezing (0º Celcius), sound travels through air at 331 meters per second (about 740 mph). But, at 20ºC, room temperature, sound travels at 343 meters per second (767 mph).Liquids:Sound travels faster in liquids than in gases because molecules are more tightly packed.