Environmental chemistry

where mCO2 is the mass fraction of CO2 in the solution, and MWsolution, MWbrine, and MWCO2 are the molecular weight of the solution, of the brine, and of CO2, respectively. Considering the definition of density as shown on 5.5, equation 5.3 can be modified to equation 5.6. ρ_CO2=MW_CO2/V_CO2 (5.5) "1" /"ρ" _" solution" =("1-" "m" _"CO2" )/"ρ" _" brine" "+" "m" _"CO2" /〖"ρ" _"CO2" 〗_" " (5.6) where ρ solution and ρ brine are density of solution and brine, MW CO2 and ρm CO2 is…

periodic table and I will never get along. Sophomore year I decided to take Chemistry and I felt positive that I would love it since its science and it had a little of math involved. However, I began to realize that chemistry was not for me when second quarter came along. In the beginning of the year I thought that the class was going to be pretty easy and that I would love it, but my thoughts changed on me. In chemistry class the students were very smart and they all had high level classes…

Salt, NaCl, is a chemical compound made of sodium and chloride which has been very important to humans for many years. Salt’s ability to preserve food was the most important aspect for many civilizations. It helped eliminate the problem of only being able to eat seasonal food. Also since salt was rather hard to obtain many people used it as a form of currency. Today, However salt is almost universally accessible, while being cheap and often iodized.…

In the homeostasis, osmosis, and diffusion carrot lab, the mean growth in weight for the carrots soaked in solution A, one of our blue solutions, was 0.151 grams. Solution A had a standard deviation of 0.048. For solution B carrots, one of our clear solutions, the mean growth was 0.117 grams. Solution B had a standard deviation of 0.057. For solution C carrots, our other blue solution, the mean growth was negative, actually indicating a loss in weight. This mean loss was -1.426 grams. Solution C…

“Magnesium was discovered by Sir Humphrey Davy in England (1755). Sir Humphrey Davy also discovered MgO and HgO. The original name of Magnesium is Magnesia from the Greek word. In 1618, a farmer at Epsom in England gave his cows water from a well, but the cows refused to drink because of the water’s bitter taste. However, the farmer noticed the water seemed to heal scratches and rashes. The words spread out. Eventually it was recognised to be magnesium sulphate, MgSO4. Until 1755, it recognized…

54) The following graph shows three different stresses on the reaction. For each stress, numbered 1, 2, and 3 on the graph, identify the stress that has been applied to the system and using Le Chateliers principle, explain why the graph changes the way it does. 1) At the point marked #1, all three concentrations gradually increase, showing that heat is added. The addition of heat puts stress on the system, so the equilibrium shifts to the right to partially undo “stress” and produce more…

My role in this group investigation was to record the time of how long it took for each coloured ice to melt on a metal and plastic surface. I also found links to curriculum followed by finding real-world applications which linked to our experiment. The research which I carried out for the science investigation focused on heat energy which related to conduction. The investigation consisted of finding out which coloured ice cube (yellow and blue) with 1, 2 and 3 drops of colour melted faster on…

Surface Runoff Introduction In the experiment taken place a group of three to four of use wanted to test the effects of what multiple chemicals had on Lemna minor. This is also known as duckweed. The chemicals we tested all are harmful, as they do not treat the life cycle of these plants well being in their water. What is Lemna Minor you may ask well stated above it is also known as duckweed but more information helps you know that it is found in ponds and it grows at a rapid rate according…

Our experiment was centered on taking four testing groups and setting a baseline level of dehydration across all four groups. From there each group would be assigned water, coke, Gatorade or remain dehydrated. The test subjects would then consume their assigned drinks based on their body weight. Urine would then be collected at thirty-minute time intervals to measure urine changes. The goal of our experiment was to determine the influence of fluids being introduced into the body of various…

Introduction Actual rocket ships use chemical reactions to lift off into space. Using baking soda and vinegar we can simulate a rocket taking off because when mixed together, a chemical reaction occurs. By changing the amounts of the chemicals we can determine which will allow the bottle rocket to go farther. Chemical Reaction Vinegar is an acetic acid. When an acetic acid and baking soda (sodium bicarbonate) are mixed together, three new chemicals are formed, Water (H2O), carbon dioxide (co2),…