Cadet Eric Wiggins Date: 18 September 2014 Course Name: Chem 100 Instructor: Captain Zuniga Section: M3A Identification of a Copper Mineral Intro Minerals are elements or compounds that are created in the Earth by geological processes. The method of isolating metals in a compound mineral is normally conducted through two processes.
Then the scientist will observe the different rates of reaction with temperature. The Boltzmann distribution of law, indicates that high temperature makes molecules gain high energy contents (pubs.acs.org/doi/abs/10.1021/ja). In order to measure the reaction rate, the scientists must use the same volume of water at three different starting temperatures: hot tap
The lab started off by measuring critical materials for the lab: the mass of an an empty 100 mL beaker, mass of beaker and copper chloride together(52.30 g), and the mass of three iron nails(2.73 g). The goal of this experiment is to determine the number of moles of copper and iron that would be produced in the reaction of iron and copper(II) chloride, the ratio of moles of iron to moles of copper, and the percent yield of copper produced. 2.00 grams of copper(II) chloride was added in the beaker to mix with 15 mL of distilled water. Then, three dry nails are placed in the copper(II) chloride solution for approximately 25 minutes. The three nails have to be scraped clean by sandpaper to make the surface of the nail shiny; if the nails are not clean, then some unknown substances might accidentally mix into the reaction and cause variations of the result.
How Mass affects Acceleration down an Incline Sabeena Jagdeo, Brianna O'Donnell, Alec Wigdahl Problem Statement: In this lab some friends are wondering if a roller coaster's acceleration will decrease with less mass in the roller coaster. The purpose is to test whether the mass of the roller coaster impacts its acceleration. Prediction: The roller coasters acceleration will stay constant whether the mass of the roller coaster changes our not. This is true because acceleration is represented by velocity divided by time in equation one.
This research poses the question: does the temperature actually affect the rate of a chemical reaction? Alka-Seltzer has chemical energy: the potential energy
When atoms are cold they sink because they are more compacted and don’t move around as much. Sink or Float was a lab that showed about temperature and density changes. With the cold water we saw it sink and just stay at the bottom of the container without moving. When the hot water was added it made it rise to the top of the container and spread. That showed us that the bottom layers would be hotter and the top layers would be colder.
Matter is made up of atoms; atoms are made of positively charged protons, neutral neutrons, and negatively charged electrons. 3. The measure of space that the molecules occupy (volume) is derived from the space in between the molecules and not the space the molecules contain themselves. 4. The motions for: • Solid- are not able to move out of their positions relative to one another, but do have small vibrational movements.
7. In this experiment, if the sucrose concentration were increased to 70 g/l would you expect sucrase activity to be significantly higher than the activity at 35 g/l. Explain your answer. No, because based on the results once it reached 30 g/l 35 g/l the results had stayed the same. There, the activity is lessening and coming to what looks like a plateau. 8.
The experiment was a success with many shocking
Throughout the experiment, the teachers were told that there would be no permanent damage done by the shocks, and when the experiment was over they were asked to rate the pain of the last shock they administered on a scale from 0 to
In the epic poem, “The Odyssey of Homer” translated by Allen Mandelbaum, our epic hero even though physically strong, he relies more on his mind than his muscles. The Odyssey focuses on Odysseus, “ a man of twists and turns” trying to get home to his wife and son after being lost at sea for years. Throughout Odysseus journey, he is able to use his cunning mind to get himself out of danger and return home. The Odyssey shows how the skillful mind can be more effective than brute strength. First of all, Odysseus’ victory in the Trojan War was won using his skillful tactics.
When temperature is increased, the amount of obtainable energy increases; meaning that particles will move at faster pace at a higher temperature. Thus rate at which molecules diffuse will progressively speed up as the temperature increases. However if temperature of solution is decreased the rate of osmosis will decrease and rate at which molecules diffuse will be significantly less than that of higher
A boiling point of a substance is dependent on the temperature at which the substance can change its matter, such as liquid to gas. The molecules present in liquid are tightly compressed together, though they are still moving and colliding. If the liquid is heated, there is a rise in temperature which generates vibrations throughout the liquid, resulting in more collisions between molecules (Helmenstine, 2017). Once the collisions between the molecules become quite intense and rapid, boiling starts to take place. There are molecules that are so powerful, they break through the attraction forces that keep the molecules together, this is called intermolecular forces (Ophardt, 2013).
Lab Report Experiment 6 Rates of Chemical Reactions By Nikhola Mirashirova Lab Partner: Dina Abetova Section 3, Saturday October 31, 2015 Introduction Rate reaction is the measure of the change in concentration of the reactants or the change in concentration of the products per unit time.1,2 Rate law for this experiment: Rate = k(I-)m(BrO3-)n(H+)p There are several factors which affect the rate of reaction: catalyst, reactant concentration, and temperature.1,2 A catalyst is a substance that changes, increases or decreases, the rate of a chemical reaction but is not being used up during the reaction.3 It provides an alternative way, so that the rate of reaction changes.4 Catalyst, which is used in this experiment, is (NH4)2MoO (0.5 M).
In thermal energy or heat energy is how fast the particles of something are moving. The more temperature you have, the more thermal energy you have which means the particles will be much faster. A hot cup of coffee has lots of thermal energy unlike a cold beverage. In chemical energy, think ability of your body to do work. The glucose in your body is said to have "chemical energy" because the glucose releases energy when chemically reacted with oxygen.
