Sodium hydroxide

Can Salt Harm the Environment? For many years, traffic due to road construction has been viewed as different. Driving to work or travelling from place to another with daily traffic due to road construction is becoming a challenge to all American people. The main task for highway engineers in winter is keeping the roads clear and safe from snow. Engineers are obliged to choose construction materials that are environment friendly and ecofriendly. For decades, engineers used the road salt deicing…

#27 Erick Roque The Exploding Lunch Bag Introduction “POP!” A balloon just blew up. But no, it was a plastic bag. But no one was there. So who blew it up? It turns out that it blew up by a mixture of vinegar, baking soda, and… WATER!!! What do you think, can you pop a bag with that mixture? Purpose The reason why I chose this experiment is because I have seen the reaction when both vinegar and baking soda go together… an explosion of vinegar. And if vinegar and baking soda can…

CAUTION: It is best not to get dichloromethane on your skin. Gloves are to be worn during this experiment, if improper safety precautions are taken there is a possibility of irritation, and or burning of the skin. CAUTION: Gas will build up in the separatory funnel while you are shaking it, so you must vent the funnel occasionally to prevent the stopper from popping out, causing a mess and possibly getting dichloromethane on your skin. ~During the pre-phase of this experiment it is…

Silver has an atomic mass of 107.9g whereas sodium has an atomic mass of 22.99g. The mass plays an important role in the value of chlorine because the mass precipitate value is used to determine the amount of chlorine moles in the precipitate. If the overall precipitate weighs less, there will be…

crystallize under such low temperature. In part II, the filtrate now contains more chloride and sodium ions, so NaCl is to be removed next. Since NaCl is the least soluble out of the four possible salts at the majority of temperatures, but does not change solubility very much with the change of temperature. Therefore, the best way to crystallize NaCl is by evaporation. Through evaporation, the concentrations of sodium ions and chloride ions increased. The concentrations of the ions were so high…

Introduction Brine shrimp are creatures that are known to thrive in harsher conditions, so they make an ideal research subject because of their durability. They are a native species of the Great Salt Lake, proving that they can withstand a high water salinity of up to 20 %+ ( https://microbewiki.kenyon.edu/index.php/Salt_Lake). Brine shrimp range from around 8-10 mm, including the tail. They have nineteen body segments, 11 of them include twenty-two legs total. Brine shrimp have an exoskeleton…

In this experiment, two cations in an unknown solution were found using qualitative analysis. For Part A, the solution was to contain either silver or lead, while in Part B, the solution that was set on the side form Part A was identified to contain either calcium or barium. Part C explored a different method through the use of cation flame tests to observe colored flames from six metal chloride solutions. In Part A, the initial step was to add HCl to the unknown sample. This was necessary…

were attracted to the oxygen (negative) end of the water molecules, and the negative Cl- ions were attracted to the hydrogen (positive) end of the water molecules. As an end result, the ionic bond between the sodium and the chloride was broken. CuSO4(s) ⇔ Cu+2(aq) + SO4-2(aq) Like the sodium chloride, the copper sulphate was split into its individual ionic components. The positive Cu+2 ions were attracted to the oxygen (negative) end of the water molecules, and the negative SO4-2 ions were…

Purpose The purpose of this lab is to investigate animal behaviors by diving into the world of ethology. There are two ways pill bugs will respond to environmental stimuli: Kinesis (non-directional response) and taxis (directional response). Kinesis occurs when organisms (randomly) move around quickly when they’re unhappy and slowly when they’re happy, which is best demonstrated when one lifts up a rock or other material that the pill bugs are under. In contrast to the simpler response that does…

2.1 Polydimethylsiloxane (PDMS) Polydimethylsiloxane (PDMS) own to a group of polymeric organosilicon compounds that are commonly stated as silicones. PDMS is optically clear, and, in general, non-flammable, non-toxic, and inert. PDMS is viscoelastic, meaning that at long flow times (or high temperatures), it acts like a viscous liquid such as honey. However, at short flow times (or low temperatures), it acts like an elastic solid such as rubber. In other words, PDMS will flow to cover the…