Step 2: Create a 95% Confidence Interval for the ounces in the bottles. Answer: x ̅=14.87 ,s=0.5503 , n=30 , α=0.05 The level of confidence is at 95%. Use the following formula to determine the confidence interval: (x ̅-t_(α/2) (s/√n),x ̅+t_(α/2) (s/√n))
The literature melting point range of methyl trans-cinnamate is ~34-38oC (Aldrich).4 The obtained melting point of the crude was 34.5-35.5oC, which is a highly narrow range of less than 1oC difference and it also falls within the expected melting point range. Hence, the crystal lattice structure of the product is largely intact, requiring an even amount of thermal energy to melt the sample. The experimental melting point range indicates the crude product is relatively pure with minimal impurities. The percent yield was satisfactory, having a 68% yield. To optimize this yield, consider the steps in how the reagents are introduced to the reaction mixture in terms.
Eventually using the NaOH and the acid’s consumed moles, the equivalent mass will be determined. Procedure: Part 2: Obtain 45mL of NaOH, and then weigh 0.3-0.4g of the unknown acid (KH2PO4). Dissolve the acid into 20.00mL water.
RESULTS AND DISCUSSION Preformulation Studies The melting point of Metoprolol Tartrate was determined by capillary method and was found to be 121ºC (120 - 124ºC) as reported in literature, thus indicating purity of Metoprolol Tartrate. FTIR analysis showed that all the characteristic peaks of Metoprolol Tartrate and mixture of Metoprolol Tartrate with excipients were present in the range of reported frequencies; which shows that drug and excipients were compatible with each other. DSC thermogram of Metoprolol Tartrate alone showed endothermic peak at 120.73°C, corresponding to the melting point of the drug. The thermal curve of the Metoprolol Tartrate obtained indicated its crystalline anhydrous state, exhibiting a sharp endothermic peak at 120.73°C.
As mentioned in number 13, the data for the melting point makes sense because my pure product and given compound almost perfectly matched. 17. Again as explained in number 14, the TLC data made sense because my pure compound and 4-tert-butylbenzyl phenol had similar distances from the solvent origin of the plate. The presence of benzyl bromide and benzyl alcohol also explains how not all the product dissolved in the filtrate.
0.550 M b. 15.5 M d. 4.50 M 12. A beaker contains 0.7 L of a 2 M calcium carbonate solution. If enough water is added to reach a final volume of 0.80 L, what is the solution’s new concentration? a. 2.23 M c. 1.75 M b. 1.12 M d. 0.28 M 13.
The triphenylmethyl methyl ether is almost pure with only a 0.05 difference in Rf values. Introduction The purpose of this experiment is to create an organic compound by a SN1 reaction. The starting material is triphenylmethyl chloride which reacts with methanol to produce an ether. Methanol is the solvent and nucleophile of the reaction.
Approximately 1µg Mbgl was used with 5 mM 4-nitropheny-β-D-glucopyranoside (PNPG) in the reaction mixture of either 2 ml or 1 ml. The reaction was stopped by adding an equal volume of 0.2M Na2CO3and the released product 4-nitrophenol was quantified based on the millimolar extinction coefficient of 18.1 mM-1cm-1at 400 nm (Workman and Day 1982). The optimum pH was determined using the same assay in the 100 mM phosphate-citrate buffer in the pH range of 3.0 to 7.0 and for pH 8.0; 100 mMtris buffer was used. Similarly, the temperature optimum was determined in 100mM citrate buffer of pH-6.0. Thermal stability was determined by incubating the protein solution at 50°C and 55°
-.334 Std. Error of Kurtosis .468 .468 The table shows that the in the data set, the GPA variable is a left skewed distribution of -.053 and a left kurtosis of -.811. The final variable indicates that the left skewed distribution stands at -.334 and a left kurtosis of -.334.
Minimal lethal dose of acrylamide is less than 500 mg/kg in adults. We successfully managed of an acute intentional poisoning with high lethal dose of acrylamide. Key words: acrylamide, acute poisoning, treatment, lethal dose. Introduction:
1. In part A. organic compounds benzophenone was mixed with water after 60 seconds it was determined the compound was insoluble in water. Similarly, to water it was found that hexane which in non polar was semi soluble. The only soluble solvent was methyl alcohol which was detected after 20 seconds.
Do you think of your body the way you think of your car? When a few lucky individuals acquire a sports car that boasts of the best automotive engineering available today, watch them read the maintenance manuals religiously. They take their car for inspection even if it purrs like a kitten and take it for repairs as soon as something does not feel right. And they're very concerned. That car is their most prized possession, a symbol of all the long and hard hours they put on the job so they could finally acquire it.