Procedure: Part A: Extraction stage 1. Place a 125 mL separatory funnel in a ring stand equipped with a small ring. 2. Heat the hot plate. 3.…
Name: Sebastian Sak Lab Partners: Tim Gronet TA: Feifei Xu Determining Molar Enthalpy of Dehydration of Sodium Acetate Trihydrate Purpose: In this lab, two solid substances, sodium acetate and sodium acetate trihydrate, will be analyzed for the heat of solution for both processes. This allowed the calculation of the molar enthalpy of dehydration of sodium acetate trihydrate. Calorimetry was used to experimentally determine the heat of solution for both reactions.…
Heat transfers from your hand to the ice. Salt makes ice cubes melt faster. The size of the ice cube also affects its melting rate. Ice melts faster when the air is moving. The chemicals may also change how long the ice cube takes to melt.…
The Effect of Temperatures on Rate of Reaction of Alka-Seltzer Introduction: A. Background This particular experiment consists of a purpose of finding out the effect of various temperatures on the rate of reaction of the Alka-Seltzer tablets. Alka-Seltzer is a medical drug that acts as a pain reliever or an antacid, which helps neutralize stomach acidity, such as heartburn. Alka-Seltzer is a form of a baking soda which is also known as sodium bicarbonate, (NaHCO₃). When sodium bicarbonate (NaHCO₃) comes in contact with water (H2O), the compound dissociates into two different ions: sodium (Na+) and bicarbonate (HCO₃-) ions.…
Terms that will be discussed in this paper will include freezing point, Phrases of matter, freezing point depression, and solution. Freezing point is the point when water turns into ice (What Makes Ice Melt Fastest). If you have ever lived in a cold climate, you have most likely have seen trucks that put salt and sand on the streets after a snowfall to prevent ice from building up on the roads. Salt acts to the lower the freezing point of water, and changing the phrase of matter.…
Miracle on Ice Michael Arbuiso is probably the best ice hockey player ever. He is the caption of his high school hockey team and he is a legend the NHL is waiting for. Michael can score,pass,check,you name it. In his junior year Michael set a record that Sidney Crosby or John Tavares hadn’t set in their career yet, 100 goals,97 assists,in just 82 games.…
For the National History Day Project, I decided to research the topic of “The Miracle on Ice”. Since I love to play and watch hockey, I thought this would be an ideal topic. The first thing I needed to do was to research the topic. I conducted my study by doing a search on my safari browser of both my iPad and computer. To locate sources, I typed the following words into my search: Miracle, on ice, facts, history.…
Salt is used on a daily basis for a number of reasons, such as cooking, water treatment and de-icing roads.[1] In Canada, salt is heavily relied on when it comes to snow removal. But, the truth is, while salt does help people during the winter, it causes the rest of the environment to suffer. Because of this, I strongly feel that salt should NOT be used on our roads. Salt harms animals, affects aquatic ecosystems negatively, causes pollution, contaminates greenery by the road, and damages cars and roads.…
In this lab, five different ratios of two chemical solids, Urea and trans¬-cinnamic acid, were heated up in a Mel Temp apparatus until the final melting point was achieved. Each substance started as a solid in a capillary tube and when they reached the…
Beneath Floes is a story that is interactive, so readers are able to choose what comes next in the story. The music, images and sound effects set the tone and help create a dark and creepy atmosphere making the story more engaging. For example, the wind blowing and humming can send cold chills down a reader’s spine. The ice cracking can make readers’ feel as if it is them walking. The images create setting, so that we can imagine ourselves in this scenario.…
Crystallization is the physical transformation of substances like liquid, therefore, the water undergoes a physical transformation from water to crystallized water. These two are both the same substance; they are just in a different physical state (liquid to solid). Furthermore, this proves crystallization occurs as substances change from one state to another. Did you observe about how much of the ice cube was above the surface of the…
When this happens the water molecules web together and the water becomes ice. The reason the salt and sugar lowers the freezing point and the water takes longer to freeze is because the salt or sugar molecules interfere with the attraction between the water molecules and therefore interfere with the webbing of the water molecules which prevents the water from turning into ice, when the water temperature lowers even further it eventually reaches a temperature where the water molecules slow down so much that the molecules are able to become a solid even with the presence of salt or sugar. What will freeze faster water, sugar water or salt water? The plain water will freeze the fastest because there is nothing interfering the freezing process.…
The purpose of this experiment is to demonstrate the molar mass by using the freezing points of the two solutions. Colligative properties were used in calculations during this experiment to discover the molar mass of an unknown solute. These properties are subsequently applied to solutions depending on the amount of particles of the solute and the solvent inside the solution. In this lab, we focus on the freezing point depression, which can be seen when a pure solvent is added to or mixed with a solute, which will then drop the temperature. Therefore, an increase of liquefied solute would lower the freezing point.…
The Thermodynamics of Potassium Nitrate Dissolving in Water Introduction: This experiment focuses on thermodynamics or the study of heat and molecular randomness. It helps illustrate how and why potassium nitrate (KNO3) dissolves in water. When it dissolves, it dissociates into potassium (K+) and nitrate (NO3-) ions. These ions can also recombine into solid potassium nitrate. This reaction can reach a state where concentrations of ions remain constant or Ksp; which stands for the equilibrium concentration for the solubility product.…
The final temperature of the water was then recorded. This process was repeated using 1.03 g and 2.07 g of sodium sulphate decahydrate, and 1.01 g, 1.50 g and 2.02 g of anhydrous sodium…