|College: Science and Technology |Required Text(s): The laboratory manual, Experiments In General Chemistry, 6th |…
2. To determine the densities of water, an unknown liquid, a rubber stopper, and an unknown rectangular solid.…
Key quantities and properties for this experiment are summarized in Tables 1-3. Relevant chemical quantities and properties are presented in Table 1, table 2 contains the summary of characterization results. Table 3 contains the summary of the characterization results. Relevant experimental observations performed during the experiment are described in Table 4.…
Procedure: In the lab experiment, I mixed different types of chemicals with different background to see if there was a chemical change, and also to see what type and why that change occurred.…
.2400 grams of the unknown compound. This is done in duplicate and purple-tinted precipitates are placed in Gooch crucibles. The precipitates are suction dried using ethyl alcohol then acetone to…
Purpose: To make observations of the types of reactions, write equations for those chemical reactions, practice balancing those reactions while determining the relative activity of the metals included in the lab.…
Purpose: Investigate a chemical reaction using lab procedures and observations. Then, find a pattern of reactivity and explain the findings using a chemical equation and particle diagram.…
The experiment is to observe a variety of chemical reactions and to identify patterns in the observation of reactants into products. The properties of the reactions will be analyzed to classify the chemical reactions into different groups.…
9) Put 4mL of stock solution and 1mL of water in a test tube to make the second solution.…
Effective communication is key to making any relationship work. Communication can be verbal (speaking), as well as non-verbal (facial expressions, body language, etc.), and can dictate how compatible two people are, and how long a relationship may last. Communicating includes expressing emotions, interaction, touch and others that dictate how the relationship between two people will develop. Being able to open up to your partner, and covey your feelings allows for a better understanding, and greater rapport which are all important. Effective communication can be directly connected to Reiss’s wheel theory of love, and the four concepts that are part of the marriage market endogamy, exogamy, homogamy and heterogamy all of which can help explain fundamentals of relationships, as well as the different types.…
Reaction 1, we start with 0.503 g copper metal that dissolves in 5.0 mL of concentrated nitric acid. This is an example of redox as a transfer of electrons is occurring. The second part of the reaction allows the nitrate ion to oxidize the copper. Reaction two, while stirring 20 mL of 6.0 M NaOH was added to the flask. Hydroxide ion binds to the copper (II). This is an example of metathesis as the cations and anions exchange partners. Reaction Three, Heating the copper hydroxide to a medium boil on the hotplate while occasionally stirring produces copper oxide. Heating allows for decomposition. It also allows the copper to oxidize. 50 mL of hot water was added three times and then decanted the supernatant solution. Reaction 4, Copper oxide is dissolved with 5 mL of 6.0M Sulfuric Acid. This allows the Oxygen to bind with to water and allow the Copper (II) ion to reform. Reaction 5, 1.0 g of 30-mesh Zinc is added. Start with half and add remain half of zinc until solution lacks the blue hue. Followed by adding 10 mL of concentrated HCl. This should eliminate the zinc through gas form decant the liquid and heat until copper is dry. Weigh out the flask + copper. Then determine the percent…
Synthesis Reactions: Synthesis reactions occur when two elements or compounds combine to create one single compound. The general equation of synthesis reactions is: A+B→AB. The following are the complete balanced equations for the five synthesis reactions performed in the lab.…
The writer started his article by describing a group of people called Tuvans, who lives in a remote area in the Republic of Tuva, in Russian Federation. The importance of this group came from the fact that they are speaking Tuvan, a language consider by linguists to be among a group of languages that are considered to be on the edge of extinction because of the low numbers of people that speak it.…
After mixing water, sodium hydroxide and a drop of phenolphthalein, the water changed its color from transparent to a pink. As more phenolphthalein was add the more dark the pink got. Since the change in color is one way of detecting chemical reaction, the conclusion was that in this specific experience chemical reaction happened.…
The objective of this experiment was to observe evidence of a reaction and to determine the chemical equation, if there is a reaction. In order for a reaction to occur, a metal strip must have evidence of black or grey deposits on the surface of the metal once dipped into the solution. The reactivity of an element is related to its tendency to lose or gain electrons. Three metal strips that were used are copper, lead and zinc as well as the solutions of silver nitrate, copper(II) nitrate, lead(II) nitrate, magnesium sulfate and dilute(3M) sulfuric acid. The copper metal strip was placed in the silver nitrate and dilute(3M) sulfuric acid, the lead metal strip was placed in the copper(II) nitrate and the zinc metal strip was placed in the lead(II) nitrate, magnesium sulfate and dilute(3M) sulfuric acid. Overall, putting these different strips of metal into different solutions will help determine the reactivity of copper, lead, zinc, magnesium, silver and hydrogen.…