Inorganic chemistry

Alterations: After mixing the benzoic acid, p- dichlorobenzene, and m- nitroaniline with the diethyl ether inside the separatory funnel it resulted a yellowish color with a strong odor that makes you dizzy. Preparing an hydrochloric acid solution and mixing it with the mixture of diethyl ether and there three compound creates a layer in the separatory funnel. Shaking it and releasing the gas to mix the compound very well, but too much shake trap the bubbles in the center layer that separate the organic

• The Mimbres pottery was little different, inferior exist traditions pottery in the Southwest. • Bowls and rarer jars and effigy vessels are made by rolling out clay rope and coiling them to form vessel and side are scraped and sometimes polished smooth, which they did not use potter’s wheels. • Their potteries are less carefully made with slightly thicker walls and less meticulous smoothing. • pottery left to dry a little bit and painted and then let to completed dry and fired in a makeshift

Determination of an Equilibrium Constant Joseph Denning Group Participants: Maycie Hestand, Austin Prinkki, Kellen Wright Meeting Time: Friday 10:00 AM TA: Hannah Colmer Date: 26 February 16 Introduction In this lab, the equilibrium constant is determined for the following reaction between iron cations and thiocyanate anions: Fe3+ (aq) + SCN- (aq) ⇌ FeSCN2+. First of all, equilibrium is the balance of the macroscopic variables in a reaction; they don’t change over time. The reaction still

The purpose of mixing methanol and the catalyst (NaOH) is to react the two substances to form Methoxide. The amount of Methanol used should be 20% of the volume of the oil NaOH does not readily dissolve into Methanol. It is best to turn on the mixer to begin agitating the Methanol and slowly pour the NaOH in. When particles of NaOH cannot be seen, the Methoxide is ready to be added to the oil. This can usually be achieved in 20 –30 minutes Step 3: Draining of Glycerol After the transesterification

Name Course Tutor Date Characteristics of enzyme catalyzed reaction Experiment 1: Measurement of progress curve Treatment of Results Molar absorption coefficient of PNP at borate pH 9.0 = 18,000 mol-1cm-1 = ε x l A=ε x c x l Where A is the absorbance ε is the is the molar extinction coefficient in mol-1dm3 cm-1 c is the concentration mol dm-3 l is the path length cm Dilution factor 1 + 5 = 6 ml Dilution factor= 6/1=6 Absorption of 1.0 at 410 nm Concentration of PNP = 0.0003 M Mole in 1 ml 0.0003/(

After ibuprofen samples had endured their given exposure time and were capped, cetirizine research samples were prepared in order for analysis. The extraction solvent used for this part of the experiment was 25% distilled water and 75 % methanol. Any cetirizine solutions made with the extraction solvent were exposed in the proper organic waste container after use. Initially, a clean 25.00 mL volumetric flask was conditioned with the extraction solvent. The capped pills samples were recommended to

If the amount of nitrates due to fertilizer runoff increases in an aquatic ecosystem, then the amount of algae in that ecosystem will increase at an accelerated rate. Four predictions coming from our experiment are if nitrate levels increase then algae growth will be accelerated. The second prediction is that if nitrates levels increase and algae increases then dissolved oxygen in the water will be at a lower level. The third prediction is that if nitrate levels increase in the water then the amount

Discussion 2 A.1 The experimental determined freezing point of the cyclohexane was 6.5 degree Celsius. By averaging the freezing points of trial 1 and 2, which are 6.4 and 6.5 degree Celsius respectively, the freezing point is calculated. A.2. On adding solute, the freezing point of cyclohexane is lowered. A.3. The weighed initial masses for dish #1 and #2 are 0.248 g and 0.102 g respectively. In order to calculate the molar mass for dish 1 and 2, the following calculations

1. Both answers are correct. There are two different models for substrate binding: lock and key or induced fit. In the lock and key model, the active site of unbound enzymes fits perfectly with the complementary shape of its substrate. In the induced fit model, the enzyme changes shape to confirm to the substrate after binding. 2. If Keq = 1, what is the ∆Go´? 0 If Keq > 1, what is the ∆Go´? Negative Exergonic If Keq < 1, what is the ∆Go´? Positive Endergonic 3. How is free energy useful

Alka Seltzer is a medicine that acts as a pain reliever and an antacid. Antacids are used to help neutralize the acids in the stomach and help treat acid reflux, heartburn, indigestion, and gastritis. The tablets contain sodium bicarbonate (NaHCO3) and citric acid (C6H8O7). The sodium bicarbonate is a base that helps neutralize the acids in the stomach, mainly hydrochloric acid (HCl). It does this by the following reaction: Na3C3H5O7(aq) + 3HCl(aq) H3C3H5O7(aq) + 3NaCl(aq). When the tablets are