Chloride

In this experiment, identifying the acids, bases, or neutrality of the unknown substance in a specific set are used to find the actual substances. The following sets of substances could have been assigned: Set 1 - Silver nitrate (AgNO3), Manganese(II) nitrate (Mn(NO3)2), Barium nitrate (Ba(NO3)2), Hydrochloric acid (HCl), Sodium Hydroxide (NaOH); Set 3 - Silver nitrate (AgNO3), Barium nitrate (Ba(NO3)2), Hydrochloric acid (HCl), Sulfuric acid (H2SO4), Sodium Hydroxide (NaOH); Set 4 - Silver…

Adding distilled water to this mixture will eradicate any traces of salt (sodium ethanoate and sodium sulfate) and remaining soluble impurities when it is discarded (AUS-e-TUTE. 2015.) Any remaining traces of ethanoic acid and sulfuric acid is neutralised by sodium carbonate (as shown in equation 1) (Fischer esterification reaction), which is converted to soluble sodium sulfate, sodium ethanoate and carbon dioxide which is released by inverting the separating funnel, and opening the tap.…

Communication /6 Problem #2 Use the chart you just created to answer the following questions. a) Which substance would be the most corrosive? /1 Sample number 2 is the most basic and corrosive substance between the four samples. With its very high pH of 12, it can be predicted that sample number 2 is the oven cleaner that contains Sodium Hydroxide. Sodium Hydroxide (NaOH) is highly corrosive due to its elements; the presence of oxygen and an electrolyte (Sodium – Na) cause corrosion, the…

Part one Make a 3 list of chemical safety hazards? The three chemical safety hazards are: Poison Toxic Corrosive Reactive Environmental hazards 2. What is Amalgam? Amalgam is mixture of metals of mercury with another metal and other metal. Almost all metal can be an amalgam with a form of mercury. 3. If you had to train someone on how to separate the mercury from the amalgam, what training would they need? WHY? If I had to train someone on how to separate the mercury…

Sodium alginate (SA) is a natural anionic polysaccharide obtained from sea weeds. It contains β-D-mannuronate (M) and α-L-glucuronate (G) residues linked by (1-4)- glycosidic linkages (Fig. 7.1) and arranged in homopolymeric blocks of each type and in heteropolymeric blocks [1]. It is a water soluble polysaccharide and has pKa values of 3.38 for the ‘M’ and 3.65 for ‘G’ units [2]. It can form complexes with positively charged polymers due to its anionic character. It is utilized as emulsifier,…

In this unit of my 9th grade Physical Science, we are learning and experiencing with labs. In this week's experiment, my class did the paper towel lab. Here, we tested the quality of three different paper towel brands, Viva, Up&Up, and Bounty. Each lab group was testing for a certain quality of each brand, such as strength and absorbency. Through different experiments, each lab group came to the conclusion that one paper towel brand had more strength or better absorbency than the other two. My…

This lab used techniques in steam distillation to extract crude oil from cloves. The cloves were boiled in a round bottom flask and using a hydrodistillation apparatus, the crude oil was separated from the cloves and sent into a clean flask. This step was used to separate the essential oils from the cloves (Setzer, W., 2008). The distillate was poured into a separatory funnel and extracted three times with dichloromethane to extract the water. After being extracted three times, a fifth of the…

In our experiment we evaluated which liquid yeast would produce gas the fastest by measuring how long it took for certain liquids to inflate a balloon. We hypothesized that if the yeast and sugar were placed in a warm,sugary environment like apple juice, then the yeast will produce more CO2 and cause the balloon to inflate faster. The control was the room temperature Throughout the experiment the type of balloons, size of the erlenmeyer flasks, amount of yeast, volume of each liquid, and the…

Red Dye 1 Red dye 1 is most likely a polar covalent molecule since we have found that it dissolves into water but does not break apart into ions. Just because it dissolves in water does not make it solely polar covalent, but since it has a relatively low conductivity, 534 mS/cm in the 0-20000 range, then it most likely is polar covalent. This is further confirmed with the fact that it does not react with NaOH, NaCl, or AgNO3, all ionic substances. The red dye does not react with NaOH since…

1. 4 agar plates were poured several days ahead in preparation for this experiment. They were stored in a Ziploc bag in the refrigerator until ready to use. 2. To perform this experiment are the: cultures of E. coli, S. cerevisiae, and S. epidermidis, three plastic inoculation loops, candle and lighter, three poured nutrient agar plates, a disposable cup, alcohol, paper towels, bleach, a permanent marker, gloves, mask, apron, and goggles. 3. Be sure to wash hands carefully with disinfectant…