Next, we determined the mass of the penny by placing it on a balance. The mass of the penny was 2.47 grams. Afterwards, we placed the penny in a beaker filled with 20 mL of 6 M HCl. In the end we put the beaker in the fume hood and allowed it to sit overnight. During day two of the penny lab, we removed the penny skin from the beaker using tweezers.
1. What does the color of Max 's urine tell Tracey about how concentrated or dilute it is? How does Max 's urine color/concentration compare to the urine specific gravity at the same time? Answer: Max pale yellow and yellow urine is considered normal before and after his exercise (Mammadli).
Next, I removed the water and the quarter from the graduated cylinder and poured 50 mL of water again. I repeated this until I got results for all three coins. To find the volume of each coin, the formula I used was volume of water and coin - initial volume of water ( 50 mL ). To find the density, I divided the mass and the volume of each
To get an “A” I was expected to fill in the answers and graph the data that was collected from the experiment. The first thing that needed to be done was to clean the penny with water. Then I
From the beginning of Nickel and Dimed and Scratch Beginnings, the question posed is the same: “Does the American Dream still exist in the modern America?” And while liberal and conservative commentators will openly contradict each other and argue the viability of making it from almost nothing in this modern age, all that is hearsay. Ehrenreich and Shepard, the authors of Nickel and Dimed and Scratch Beginnings respectively, tried to go beyond what the commentators were doing and prove whether the American dream was still alive by embarking on their own separate case studies. And while, it is imaginable that anyone can rise from rags to as, Shepard stated “[to] slightly better rags,” the how to do this is the item in question. The American
On our paper we predicted the amount of pennies that could fit in the boat before it sank. We tested the boat in the water and added pennies one by one. We then calculated the mass of pennies that fit in the boat and the density of it. The purpose of this Lab was to make a boat that holds as many pennies as possible and understand how to calculate
Sanella Tsuber Block ¾ Argumentative Essay Banning the Pennie Is the penny worth for what it is made for? Pennies are not really worth much, so i think that the United States Of America should ban it out of this country. Pennies are nice and small but they just waste our time. Jim Flaherty, the Canadian finance minister said “Pennies take up too much space on our dressers at home”, like other countries we should take the penny away. Frankly the penny just costs way too much, so why not ban it?
Drug addiction is a constant war. It is a battle being fought between oneself, possibly family, friends but always, the drug. Yet for anyone that is struggling, there is hope. Despite our differences, there will always be a path to recovery. In “Water by the Spoonful”, Quiara Alegría Hudes incorporates several strategies and tactics through various character’s agencies and symbolism to ultimately create a piece that centers recuperation.
The table seemed slightly imbalanced, and since the flies demonstrate a negative geotaxis, meaning that they resist gravity, the flies may have been influenced to choose one side over another simply by gravitational means. Another error that may have occurred could be the source of light. Though the lab group aimed to maintain an equal amount of light for all sides of the bottles, a vaguely estimated spot was determined and the choice chamber placed there. Since fruit flies also demonstrate a positive phototaxis, this also affects them. The last error that may have occurred due to tape.
Being, if hot and cold water were combined, then the cold water would move beneath the hot water because cold water is denser than hot water. Methods Materials: - Small glass bowl - Ice - Cold water - Food coloring - Spoon - Clear glass cup - Hot water - Clear medicine dropper Procedure: 1. First, in the glass bowl, mix the ice, cold water, and food coloring with the spoon 2. Next, fill the glass cup with hot water 3.
The density of the penny was 4.68 g/cm3 before the experiment and 4.43 g/cm3 at the end of the experiment. The density of gold, though, is 19.3 g/cm3. Since the densities of the penny and the gold are different, the penny clearly did not change into another element. The gold color of the penny was a result of the flame that it was held above melting the zinc that it was coated in with the original bronze colored coating of the penny, creating an alloy with a shiny yellow color. Since neither of the pennies, silver colored or gold, changed densities throughout the experiment and each retained their own properties; the properties of copper; no new elements were
The ponderous, mythical opening of visionary auteur Guillermo del Toro’s Oscar-winning film The Shape of Water gently guides us into its unique blend of horror and romance, surrounded by the same magic del Toro effortlessly captured in its spiritual predecessor, Pan’s Labyrinth from 2006. In the age of superhero blockbusters, endless sequels and reboots, del Toro’s sensual adult fantasy manages to make its voice heard amidst the cacophony of studio demands and creative restriction. Set during the height of the Cold War in Baltimore 1962, the film follows the journey of mute custodian Elisa Esposito (played with aplomb by Sally Hawkins), who works at a high-security government research facility, and a amphibious humanoid creature captured from South America. Elisa proves that vulnerability is not a sign of weakness, that she doesn 't need to hide her identity under cynical facades; there is a nuanced strength at
Biology Design Practical Joshua Edwards What are effects of the volume of a potato and the amount of weight it loses when placed in salt solution? Introduction This design practical uses a potato’s surface area to volume ratio to see what affects it has on osmosis in different concentrations. Osmosis is the movement of water molecules through a cell membrane into an area of a higher solute concentration. The movement goes the way of the solvent with more solute because the lower solute concentration is drifting through balancing the ratio of solute per solvent (En.wikipedia.org, 2018).
Procedure A. Preparation of NaOH solution The molarity of a solution is the ratio of the number of solutes dissolved in a liter of solution. To figure out the needed mass (in grams) of NaOH pellets to be dissolved in a 0.25 L of water, remember that a mole is equivalent to the quotient of mass over the molar mass of the substance. This was used to rearrange the base formula and to derive the mathematical equation of mass in terms of molarity. mass (g) =
When the concentration of the salt was increased, the amount of water decrease and it is the same the other way around. The mass of the egg will increase if the amount of water is more than the concentration of the salt water and all of this happens because of osmosis. This motion will cause the water to continue moving back and forth across the membrane to create and equilibrium, with equal concentrations on both
