Conclusion: Compare Trial 1 and Trial 2. The Trial 1 change in mass are 12.5g, however Trial 2 changes in mass is 1.2g. The Trial 1 change in mass is more than Trial 2. And I think the Low of Conservation of Mass violated in the Trial 1 is can be exist. Because the Trial 1 actually the soda with vinegar have Chemical reactions occur and chemical
6. Have you ever read "The Emporer's Test" or "The Mystery Ingredient". Even though they are both different types of text, it might surprise you how similar and how different these stories are. There are many similarities and differences in these stories that you may not know about. The theme of these stories are very similar.
Sodium Bicarbonate mixed with Hydrochloric acid. The chemical reaction observed showed that there was fizzing and bubbling, this is evidence that a new gas was being produced. This new gas, CO2 was generated from the reaction. After the fizzing stopped a liquid was leftover leading me to conclude the liquid leftover leading me to conclude the liquid leftover was the NaCl and H2O 4. You found a sample of a solution that has a faint odor resembling vinegar (an acid).
"According to the law of conservation of mass, if a chemical reaction occurs in a closed system, there should be no difference in the mass."(www.chem.wisc.edu). We had 100 ml of water in container and it weighs 119.2g and the total mass within the cap, paper and the tablet was 121.95g. We put the tablet in the water and tightly capped the bottle filled with water. When tablet get disappeared in the water, the bottle became pressurized and got expanded. Furthermore, we uncapped the bottle and waited for some seconds then put the cap again on it. Then we measured mass again, it was almost as same as before.
The other time where mass could have been lost was during reaction 3, more specifically each time the liquid was decanted. Although a few black sand-coffee grains of the copper (II) oxide lost do not seem like a significant amount, they do have an impact on the final result, and each time a few of the grains were accidentally decanted could have an impact on why our final recovered mass was less than the initial amount that we began
Verna Wang Hannah Palmer CHEM 101-069 Lab 11-19-16 Stoichiometry and Limiting Reagents Lab Report Purpose: We are using the reaction of sodium hydroxide and calcium chloride to illustrate stoichiometry by demonstrating proportions needed to cause a reaction to take place. Background: Just like a recipe would call for a specific amount of one ingredient to a specific amount of another, stoichiometry is the same exact method for calculating moles in a chemical reaction. Sometimes, we may not have enough of or too much of one ingredient , which would be defined as limiting and excess reagent, respectively.
For the efficacy of this argument, I will ask you grant my assumption that is: Mass cannot be created or destroyed. However, it can be rearranged or changed in form through processes like chemical reactions. All the matter that composes the universe has always been there and will never cease to be there since it cannot be
How does the amount of baking soda mixed with vinegar affect the volume of gas produced per 10 seconds? A reaction is when (usually) a solute acts on a solvent to create a reaction. An example of a reaction is an explosion, Here we will be using baking soda and vinegar which are our two components which will cause for a reaction to take place. Reactions can be affected by several things such as temperature, concentration and the presence or absence of a catalyst which is a substance which can increase the rate of reaction.
My claim is photosynthesise models the Law of Conservation of matter and energy that no atoms would be able to be created or destroyed only rearranged. My evidence to support my claim is the Law of Conservation of matter states No atoms can be created or destroyed. This chemical equation “6CO2+6H2O-->C6H12O6” (Discovering the secrets of Photosynthesis, 2017. This represents only atoms can only be rearranged.
Then the balloon is lifted up so that the baking soda runs into bottle to react with the vinegar inside. Immediately the balloon is inflated by the carbon dioxide formed. The baking soda is kept constant when the experiment is repeated for another different amount of vinegar. Results/Findings When sodium bicarbonate and vinegar mix,
When a solute acts on a solvent a chemical reaction takes place. Here we will be using baking soda and vinegar which are our two components which will cause a chemical reaction. Reactions can be affected by several things such as temperature, concentration and the presence or absence of a catalyst which is a substance which can increase the rate of the reaction. To determine the rate of a reaction there are many methods that can be used.
After reflux, we removed the reaction mixture from the apparatus and cooled it for several minutes. We transferred the mixture to the beaker that contained water (30 mL). We cooled the mixture to room temperature and added sodium carbonate to neutralize the mixture. We added sodium carbonate until the pH of the mixture was 8. After neutralize, we collected benzocaine by vacuum filtration.
The CO2 gas produced can be used as an indicator for the rate of reaction as the amount of CO2 gas that is collected with in a fixed time is proportional to the rate of reaction. Therefore, the average rate of reaction can be calculated by measuring the amount of CO2 collected for a set period of time. The rate expression of the reaction is written as: rate = k[CaCO3]a[HCl]b 1 http://www.nlm.nih.gov/medlineplus/druginfo/meds/a601032.html 2 http://www.thechemicalblog.co.uk/10-uses-of-hydrochloric-acid/ Page 2 of 7 k represents the rate constant, a and b signify the order of reaction with respect to the reactants. The order of the reaction is the power to which the concentration of that reactant is raised to, for example, doubling the concentration of a reactant that is first order would double the rate of reaction while doubling the concentration of a reactant that is in the second order would quadruple the rate of reaction.
Everyday a crime is committed, but Investigators use evidence to solve the crime. They use any kind of evidence: direct, circumstantial, real or physical evidence. It wouldn’t matter exactly what they need to prove the other people wrong. In “Forensic Science: Evidence, Clues, and Investigation” by Andrea Campbell, Forensic Science is most helpful in presenting a trial.
UNIVERSITY OF MALTA Advanced Forensic Medicine PAT 5751 Ramon Bonett Sladden 402291M Assignment title set by Mr John C. Ellul. Forensic science plays a very important role in establishing the truth. Choose one type of physical evidence such as fingerprints, shoe marks, blood, et cetera.
