Assess The Difference Between Pure Zinc Acetate On Soda-Lime

The product was then suspended in 2 ml of water with a stir rod in a 50 ml Erlenmeyer flask and heated to boiling. Water was added in one milliliter increments until all the product was dissolved (18 ml added total). The saturated solution was allowed to slowly cool, and gradual white crystal formation was observed. Recrystallized product was collected once more by suction filtration with the Hirsch funnel once crystallization ceased. Collected product dried on a watch glass for a week, weighed 0.14 g (1.2 mmol), and the melting point was 139°-141°

4. In which stage of manufacturing can the type of glass be varied between soda-lime, borosilicate, and aluminosilicate glass?

The larger the amount of substance dissolved in the solvent and the more pressure there is on that substance, the larger crystals will be. (“How Does Temp Affect the Growth Rate of Crystals?” 2018). Crystals grown in higher temperatures are not necessarily better than those grown in cooler temperatures; different types of crystals are simply produced. Crystals grown in cooler solutions force the minerals together, thus creating bonds and impurities in their structure that interrupt the crystal pattern. This results in forming a large number of smaller crystals.

The vial was removed from the heat and cooled to room temperature. The spin vane was rinsed with 2-3 drops of warm water over the conical vial. The vial was cooled to room temperature then placed in an ice bath for 15 minutes. The liquid was decanted from the mixture and the resulting crystals were dried on filter paper. The crystals were then placed on a watch glass for further drying. The crystals were weighed and a small sample was placed into a capillary tube for melting point determination.

One occurrence noticed during experimental procedures was the deterioration of the filter paper used in the Hirsch funnel during vacuum filtration of the product. Filter paper pieces were observed to remain in solution and could not be filtered or separated out. Therefore, it can be summarized that product contamination is most likely attributed to filter paper pieces dispersed throughout the crystalized product. Despite this the synthesized chemical product was pure throughout its composition in accordance with the experimental melting point data recovered correlating with that of the literature

1. “Prepare about 500mL of approximately 0.004M disodium EDTA solution. To prepare your solution, weigh out 0.7-0.8g of Na2EDTA and dissolve in about 500mL deionized water in your plastic bottle. Seal the bottle and shake vigorously for a few minutes to dissolve the salt.

Add 10 mL of 95% ethanol to the beaker and warm it in a water bath in order to dissolve the crystals

The cooling rate has a direct effect on the co-crystal’s size, growth and shape. After co-crystals production, they are then filtered and washed to eliminate impurities. Finally, the crystals are dried, milled and sieved to reduce their particle size [2].

The formation of nanocrystalline ZnO films was confirmed by using X-ray diffraction. XRD patterns of simple glass substrate and ZnO coated glass substrates were shown in figure 3(a) and (b-d), respectively. The amorphous behavior of glass substrate with a continuous curve ~20˚ to 35˚ in 2θ range was depicted in ‘figure 3(a)’ and was clearly evidenced in ZnO coated substrates. A comparatively low intensity and broadness in diffraction peaks was observed in single layer deposited ZnO thin film ‘figure 3(b)’, which revealed that film consist of coarse fine grains with nanocrystallinity. It was observed that the peak intensities gradually increased from triple ‘figure 2(c)’ to five layers ‘figure 2(d)’ deposited ZnO thin film and hence

Morphologies of the as-prepared zeolite nanostructures products (ZF, ZM, ZS, and ZT) have been examined using both of scanning electron microscopy (SEM) and transmission electron microscopy (TEM), as shown in Figs. 3 and 4, respectively. The images taken by SEM demonstrated that ZM and ZT are made up of aggregates of a sphere like structures with an average size of ca.3.54 and 3.07 μm, respectively. In addition, ZF and ZS samples were found to consist of aggregates of a (sphere and sheet) and (sphere and cubic) like structures with an average size of ca. 10.33 and 8.65 μm, respectively. Moreover, TEM images, exhibits that the samples; ZF, ZM, ZS, and ZT, are composed of (spherical), (spherical and irregular),

The final size depends on the balance between the nucleation and aggregation rates in the system. Fig. 2 (g) and (h) presented the EDS analysis on treated samples, confirming the presence of Silica, Calcium and Phosphorous from the bioactive glass on the surface of the modified films.

The majority of TBCs in use today are ZrO2-based having a composition containing ∼8 wt% Y2O3 (8YSZ). Originally, this ceramic was selected empirically based on its low thermal conductivity (~1 W/mK), high

This paper will focus on how the annealing of lead zirconium titanate thin films affects its various properties, including its microstructure and electrical properties. This includes examining factors such as the annealing methods, environment, temperature, hold time and heating rate. Lead zirconium titanate is important because improvements in its production will allow for major improvements the next generation of electronic sensors and storage systems.

diamond layers on titanium. The aim of this work was to investigate the influence of

In this experiment, we use DC magnetron sputtering to form a titanium layer on the sample and use quartz crystal microbalance to monitor the thickness of thin film at the same time. Then measure the thickness of the metal thin film with profilometer. With the measured thickness data, we are able to calculate the growth rate of the titanium thin film.