Flammable liquid

The Freezing point of water is 32° fahrenheit, But does anything affect the freezing point of water? The effect of salt and sugar lowering water’s freezing point is called Freezing Point Depression(FPD). When water freezes, its molecules slow down and “stick” together, and eventually slow down so much they stay in place and become a solid. However when salt or sugar is added, it “interferes with the formation of the crystalline bonds between water molecules that give ice its solidity”, Written…

which is one minute, and the amount of liquid in each can which is 10 mL. We also had confounding variables which are variables that the researcher failed to control, or eliminate, damaging the internal validity of an experiment. Some confounding variables in our experiment are the temperature in the can when we flip it because we actually couldn’t tell what it was, and the fact that we couldn’t control the fact that there should be exactly 10 mL of the liquid in the can because no matter what…

Mercury is highly toxic to a point where the exposure to less than a gram of liquid mercury can cause mercury poisoning. Mercury has low oxidation, the chemical element has little to no reaction when exposed to oxygen in the air. Mercury in general reacts with acids, the element reacts with some acids that are warm but has no affect to most cold acids. Mercury forms a chemical property called amalgam which is a liquid mercury mixed with metal alloy mixture used to fill cavities caused by tooth…

For the controlled dH2O, it was hypothesized that no disks would float. The reason is because there is not enough CO2 for sample organism to absorb to allow it to do so. Looking at Figure 5.1, the slope of the line is y=0. This supports the hypothesis because there are no floating disks. For the 0.2% bicarbonate solution, it was hypothesized that if the leaf disks in this solution were placed under a lamp, then the disks would float. Figure 5.1 supports this claim, as there is an almost linear…

How to Change Your Oil Frequent oil changes are an important part of routine maintenance (Edmunds). An oil change gets rid of the old oil in the engine by replacing it with new oil (Edmunds). The oil filter is also replaced during this process. The oil filter makes sure the oil circulating through the engine is of good quality. Frequent oil changes are an important step in routine maintenance, because it rids the engine of the old oil by replacing it with new, fresh oil (NAPAFilters). An…

The first source was a bathtub faucet which was measured in a closed bathroom. It was measured about six inches from the faucet only getting 75.7dBA. The second source was an all metal toolbox closing. Measured six inches from the source, while it is only a quick increase at 90.1Dba, everyday exposure can be damaging. The next source was an acoustic guitar being strummed in my apartment. The meter was roughly one foot away on a table. This was under the minimum requirement to be considered…

According to the House Energy and Commerce Committee, the chemicals used in fracking fluids include over 750 different chemicals. Some are innocuouse (salt, gelatin) while others pose significant human health hazards (methanol, isopropanol and 2-butoxyethanol). About 650 of the 750 chemicals used in fracking operations are known carcinogens, according to the report filed with the U.S. House of Representatives in April 2011. They include toxic chemicals like benzene and tholuene. Returning…

The organic care hand wash had 2cm worth of inhibition zone, dettol hand wash had 1cm, palmolive had 0.9cm and dettol santisier had 0.8cm. In terms of which one was the most ocst efficient, dettol hand wash cost $2.00, while organic care costs $4.00. The hypothesis was refuted, as it was said the popularity of the product would dictate its effectiveness and efficiency, yet the most popular product is dettol. Dettol is seen in everywhere, on hygiene posters, tv ads, in public bathrooms etc., and…

To begin changing the oil on a 1994 Formula Firebird, the vehicle must be parked on a flat surface and turned off. The motor will need time to cool, so as not to burn whoever is performing the oil change. During the time period in which the engine is cooling down, place a three-ton capacity jack under the car and position it below the frame behind the front wheel on the driver's side of the car. Then, push down on the lever of the jack until the car has been raised enough for a person to crawl…

1. Describe the function of the scrotum in protecting the testes from temperature fluctuations. Scrotum is an external sex organ. The scrotum is a pouch like structure made up of skin. It has 2 main functions. It protects the testis and maintains 2-3oc temperature lower than body temperature, which is very important for spermatogenesis. The scrotum also contains numerous blood vessels and nerves. The cremaster muscle present in the scrotum contracts and pulls scrotum closer to the body whenever…