Within our global economy‚ we are bombarded by companies advertising schemes informing consumers the product is healthy and nutritious. This clouds our perception of what is a “healthy” food and how much we should consume of that food. After spending eight days analyzing the food I consume‚ including the homemade items‚ I find much of the food on the market today is a potentially toxic form of poison hidden under a bunch of government politics. Prior to this class I was under the influence of many
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ions. QUESTION If copper (II) sulfate when mixed with sodium carbonate at different quantities combine to form ions in definite ratios. HYPOTHESIS / PREDICTION I believe that the ions will combine in definite ratios due to the fact that the valance electrons will not be changing throughout any chemicals; consequently the ions must combine in definite ratios. EXPERIMENTAL DESIGN A technique is performed in which copper (II) sulfate and sodium carbonate are placed together in various test tubes‚
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water was added and it was transferred in a separatory funnel. It was then extracted with immiscible saturated sodium bicarbonate to hasten separation. The sodium bicarbonate layer was discarded and the organic layer was again extracted with sodium chloride to remove the acid. The sodium chloride layer was discarded. To fully isolate the organic layer (isoamyl acetate)‚ anhydrous sodium sulfate was added to dry it. Based on the results and observation obtained‚ we were able to synthesize isoamyl
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different compounds. A compound is a chemical substance that consists of two or more different chemically bonded elements. In this experiment‚ several different compounds are being worked with – potassium iodide‚ lead (II) nitrate‚ acetic acid and sodium bicarbonate. The purpose of this experiment is to determine whether or not a reaction has taken place using qualitative and quantitative analysis. Procedure Part 1 - Qualitative observations of both potassium iodide and lead (II) nitrate were
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of the Validity of the Beer-Lambert Law ................................................. 23 N - Kinetics of the Depolymerization of Diacetone Alcohol via Basic Catalysis ................... 27 W - Kinetics of the Reaction of a Food Colourant with Sodium Hypochlorite ..................... 31 X - Kinetics of the Decomposition of Hydrogen Peroxide ....................................................... 37 -2- Schedule of experiments – Winter 2015 – CHM 2330 Lab Section 1 (Tuesday) 2 (Tuesday) 3 (Friday)
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Analysis of the nitrogen content of lawn fertiliser 1. Aim To find the percentage by mass of available nitrogen‚ present as the ammonium ion‚ in a lawn fertiliser. 2. Materials 1.3g lawn fertiliser‚ finely ground 100ml standard sodium hydroxide solution (0.96M) 100ml standard hydrochloric acid (0.94M) Methyl red indicator 500mL de-ionised water Wash bottle containing de-ionised water Red litmus paper 2 × small funnels 250 mL volumetric flask 3 × 250mL conical flask 20mL pipette
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Abstract: The experiment was done to demonstrate the effect of ADH on the volume and concentration of urine in order to demonstrate the control of ADH over blood plasma osmolarity. Since non-invasive methods were preferred the volume and concentration of urine was used in place of drawing blood. The results that we our anticipating are that ADH levels in the group of subjects that ingested the 6 gm. Of NaCl would increase over time in response to the increased osmolarity of the blood from all
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K+ channels close and the Na+/K+ transporter restores the resting potential. Action potentials are formed when a stimulus causes the cell membrane to depolarize past the threshold of excitation‚ causing all sodium ion channels to open. When the potassium ion channels are opened and sodium ion channels are closed‚ the cell membrane becomes hyperpolarized as potassium ions leave the cell; the cell cannot fire during this refractory period. The action potential travels down the axon as the membrane
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In the experiment‚ as the size of the cube decreased‚ the absorption rate increased‚ showing that the smaller cells absorbed more sodium hydroxide than bigger cells. The smaller cells were able to absorb more sodium hydroxide as they have a bigger surface area to volume ratio causing them to act more efficiently than the bigger cells. The smallest cell had a ratio of 1:12 while the biggest cell had a ratio of 1:2‚ leaving a gap of 5:12 causing the bigger cell to act less efficient in absorbing the
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If sodium chloride is added to a solution with Saccharomyces cerevisiae‚ then sodium chloride should hinder the growth and reproduction of those cells because the salt concentrations will limit the overall efficiency of the cell’s reproductive processes as well as decrease overall colony size. In our experiment‚ we plan to note the effects of salt on S. cerevisiae by both spot plating to note overall cell colony size and the number of total cells and through the use of electro photometry to also
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