and 4. Periodic tables vary in atomic mass slightly and this slight difference of atomic mass of elements could in turn change the value of calculated molar masses in experiments 2 and 4. Lastly, the molar mass of air was given to be 28.8 grams per mole and this could in fact be different from the true air mixture of the lab in which the experiment was conducted. A variety of conversion factors were utilized to calculate data and similar to periodic tables, most conversion factors vary slightly…
My earliest memory of science is from 5th grade in Mr. Kern’s class. I remember we had a unit on sea creatures, and we got to take care of and study fish and crawfish. I loved this activity because it was so hands on and we were the caretakers of the creatures, so we did all the work. It was really our own experiment, not just something out of a book. We all loved coming into class in the morning and running to see our new pets, and one day I noticed my crawfish had lost its shell. We learned…
colligative properties studied in this current chapter of chemistry are: vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure. The van’t Hoff factor for a solute is equivalent to the number of particles, in moles, will break apart in the solvent. When an…
The current standard for the kilogram is the International Prototype Kilogram. The International Prototype Kilogram, also known as Le Grand K, is a platinum-iridium bar made in the 1880’s. This official Kilogram is kept in a vault in Paris under two glass domes. The reason it is under 2 glass domes it to prevent dust from obstructing from the weight of the Kilogram. However according to Sandia National Laboratories, a government organization under the Department of Energy, “Of the seven units of…
volume of a mole of H₂(g) is at STP by using gas laws. The hypothesis for the experiment is that if H₂(g) is produced at RT and STP, Avogadro’s law can be used to experimentally determine the amount of H₂(g) because equal gases at the same pressure and temperature have the same amount of particles. In order to find the molar volume, hydrogen gas was produced in a eudiometer tube by reacting magnesium and hydrogen chloride. The results showed that the molar volume of H₂(g) was 27.5L per mole of…
Tiny Tina Psychoanalytic Tiny Tina is a character within a videogame called Borderlands 2. She has no concept of empathy for other people and almost no concept of ego or superego. She demonstrates that she is all id because she likes explosions… and in particular, blowing people up with those explosions (She feels no remorse afterwards). She is introduced by blowing up a bandit. Her go to defense mechanism would be denial. TIny Tina has her own downloadable content called “Tiny Tina’s Assault…
Eurycea rathbuni otherwise known as Texas Blind Salamanders are incredible creatures that do not get their fair share of attention compared to animals such as cheetahs and lions. Specifically, they are only known to reside within the dark water filled caves of Edward’s Aquifer in Hays County, Texas.5 Thus, this species was discovered by the San Marcos National Fishery, which is now known as Texas State University.5,6 In 1967, Eurycea Rathbuni was listed as an endangered species, and within ten…
Sink or swim 50 years back most everyone heard the story of how humans had evolved over time. It was claimed that our ancestors, apes, had been separated between jungle and desert. Comparing physical traits of both apes and humans, there is a dramatic difference. Apes on four legs, covered in layers of fur… Then there are the humans, standing tall upon two legs, having no fur. The original theory is that when our ancestors parted in two opposite environments they had simply adapted different…
1997 documentary film Fast, Cheap and Out of Control, Errol Morris directs the fascination of a man’s action that profoundly emanates his relationship with the world around him. The four men: Dave Hoover, a Wild Animal Tamer; Ray Mendez, the Hairless Mole-Rat Specialist; George Mendonca, a Topiary Gardener; and Rodney Brooks, a Robotic Scientist, each obsessed to create unconventional worlds of their aspirations. The film has a disrupted narrative format, interweaving interviews with the men…
prime target for much mockery and ridicule. My sister developed a nickname for me when I was in middle school: Naked Mole Rat. Honestly, it’s a creative nickname. Who else would come up with something like that? Just my big sister who loved to make fun of me. I wore glasses since third grade. When I didn’t have my glasses on, I made a weird squinty face. Kind of like a Naked Mole Rat. On top of this, my front tooth had grown out on top of my baby tooth, creating big, crooked front teeth.…