Hydrated Lime The results show that hydrated lime increased the intermediate temperature stiffness of the PG 64 - 22 binder. Hydrated lime showed to improve the fatigue properties of the aged binder. It could decrease the fatigue parameter by 23% which is a desired result when cracking due to aging is a concern. The mixing was done at three percentages: 1%, 2%, 3% . The lowest aging index was found to be at 2% by weight of the binder.
Soap’s Effect on The Surface Tension Of Water By: Lusinda Garcia Biology I - Pre-AP December 10, 2017 Introduction Surface tension is when the surface of a liquid that’s in contact with gas, acts like a thin elastic sheet. Water has a high level of surface tension, which means that when the molecules on the surface of water are not surrounded by similar molecules on all sides, they're being pulled by cohesion from other similar molecules deep inside. These molecules bind to each other strongly but stick to the other mediums weakly. It has been proven many times that soap decreases water’s surface tension; however, there is still a vast amount of people that believe soap increases the elasticity of water’s surface tension. Soap’s negative
The graph presents the trend of the rate of reaction decreasing when the temperature is lower. This is shown through the average rate of reaction time being 89.5 seconds for the cold water, while in the hot water the tablet’s average reaction time was 41 seconds. Based on the graph, you can see a significant change between the two times, the average cold water time’s bar have a vast change from the average hot water time’s bar. The reason I chose a bar graph to display my data was to be able to compare distinct categories in an organized manner, while having the changes between them
The average equivalent mass for the acid is 135g/mol H+. 3. The answer obtained in Question #2 is the equivalent mass of the acid rather than the molar mass because the acid could be polyprotic, which would mean the equivalent mass is different from the molar mass since it is depending on moles of H+ per molecule, and there could be multiple moles of H+ ions in one mole of a molecule. 4. The KHP and the acid samples must be dried, because there would still be extra water which would skew the molarity.
To further explain how the concentration of acetone differs by parentage, I will explain how much g/l are contained with different percentages. The 5% contains 2.904g/l, the 10% contains 5.808g/l, the 20% contains 11.66g/l, the 30% contains 17.42g/l; we can see there is a positive relationship between percentage of concentration and g/l of acetone, (i.e. the higher the percentage, the more g/l is contained in solvent). The hypothesis states that the high concentration of acetone would be more effective and efficient in breaking down the phospholipids inside of the beet tissue. Up next was the null hypothesis for the experiment.
Those which aggregated with salt particles and formed clumps were considered hydrophobic. E.coli grown on MacConkey agar plates were inoculated into 1 ml of Phosphate buffer saline (PBS) at pH 6.8 and turbidity was matched with McFarland tubes 6 or 7 to get a colony count of 5x109 colonies/ ml. Different molar concentrations of ammonium sulphate namely 0.625M, 1.25M and 2.5M were prepared. One loopful (10µl) of bacterial suspension made in PBS was mixed with equal volume of ammonium sulphate solutions of different molarity on a clean glass slide and observed for one minute while rotating. The highest dilution of ammonium sulphate solution giving visible clumping of bacteria was noted as the salt aggregation test value.
Using distilled water would be a good method in order to rinse the beaker. Make the solution up to the 500cm3 mark with iodine (1% concentration) • Starch Indicator Solution Weigh 0.25g of soluble starch and add it to 50cm3 of near boiling water in a 50cm3 beaker. Stir it in order to dissolve and wait for it to cool before using. Procedure Safety • Before conducting the experiment, be sure to put on safety goggles and
Short chain volatile fatty acids and ammonia-nitrogen analysis From each incubation bottle, 5 mL of supernatant was collected and stored for analysis of VFA and ammonia-nitrogen. For VFA analysis, samples were centrifuged in Sorvall Centrifuge (SL-50 T, 8×50 ml) at 25,000g for 15 min at 4° C and a part of the supernatant was transferred to a micro-centrifuge tube (capacity 1.5 mL) containing meta-phosphoric acid (250 g/L), (5 g/L) as internal standard. The standard VFA mixture consisted of acetic, propionic, butyric, isobutyric, valeric and isovaleric acids and was treated in the same manner as that for the sample. The VFA’s in test sample were analyzed by the gas chromotaphore (GC) with FID analyzer and it was calibrated against the standard.
Done properly, a bleach bath is a safe solution for skin infections. Bleach can fight against bacteria, fungi, and viruses, and a small amount diluted in water is enough to be effective. Although the concentration of bleach in a bath is a little higher when used as a treatment, it is essentially like soaking in a swimming pool. You should use a household bleach such as How to Draw a Bleach Bath Fill a tub with lukewarm water. A standard tub in the United states holds about 40 gallons of water, but before you try to take a bath in bleach, be sure you know how much water your tub holds.
culmorum. Studies have shown that DON can withstand a very high temperature within the interval of 170C to 350C, however, DON levels may be reduced especially in boiling, for example, it was discovered that DON levels are reduced in cooked pasta and noodles because of leaching into the cooking water (Manthey et al.,