Saftey lab pdf

CHEMISTRY 1110L LAB REPORT: REACTIONS OF COPPER (Part B) 1. Reaction 4: a. Color of copper(II) sulfate b. Water solubility of copper(II) sulfate 2. Reaction 5: CuO + H₂SO4 → CuSO4 + Zn →>> - 5. Percent recovery (calculations) 3. Mass of copper metal recovered 4. Initial mass of copper (from Part A) CuSO4 + Cu + ZnSO4 + Zn + H₂SO4 a. Color of zinc metal (before reaction) b. Color/appearance of copper metal (after reaction) c. Color of solution before reaction d. Color of solution after reaction e. Color of hydrogen gas ZnSO4 H₂O blue Solid Water 6. Initials of instructor or teaching assistant (TA) own H₂ Name • Loona Alg busi Partner Desk # AR Solid metal-normal color 20

Mg + 2HCl → MgCl2 + H2 This experiment was performed two times. All values are valid to one decimal place. If the decimal place is not shown, add a ".0" Experiment Mass of Mg (mg) Starting Temperature (°C) Final Temperature (°C) 1 2 19.6 20.7 19.5 20.7 33 33.5 The previous page contained data from two experimental runs for the reaction between magnesium and hydrochloric acid. Mg+ 2HC! MgCl2 + H2 First, how many moles (n) of Mg reacted with the HCI? Use the average value of the two masses from your provided data set. Answer: 0.001658 I Mg + 2HCI MgCl2 + H2 Next, what is the amount of heat absorbed by the water (qsurr) in the experiment? Use the average AT from your data to calculate a single value for q. Report your answer in J. Remember to consult the lab manual and/or the video for any values you might need. Answer: Mg + 2HC! MgCl2 + H2 Finally, calculate A,H for this reaction and report your answer in kJ/mol. Answer:

I am doing multiple ungraded practices on airbags for an upcoming quiz. This is one of the practices i have found online. Read the article i have attached and then answer the questions. Thank you :)   1. What type of reaction occurs initially with sodium azide when airbags initially deploy?2. Write the complete, balanced reaction below.3. What would happen if the manufacturers did not start with the correct amount of sodium azide?4. Based on the article, what is stoichiometry? Why is it important for airbag safety?5. Why is potassium nitrate also in airbags? 6. Write the balanced equation for the reaction between potassium nitrate and sodium below.7. What is the point of silicon dioxide?8. Why are careful stoichiometric calculations important for air bags and safety

Name (please print): Fall 2022 Basic Laboratory Operations Post Lab Questions 1.) Suppose you're attempting to measure the density of a liquid that is highly volatile (it evaporates quickly). If you first measure the mass and then several minutes later you measure the volume of the liquid will the measured density be higher than the true value, lower than the true value, or the true density of the liquid. [It helps to understand this problem with the density equation.] 2.) Suppose you're attempting to measure the density of a liquid that is highly volatile (it evaporates quickly). If you first measure the volume and then several minutes later you measure the mass of the liquid will the measured density be higher than the true value, lower than the true value, or the true density of the liquid. [It helps to understand this problem with the density equation.] 3.) You're attempting to calculate the density of an alloy. The alloy is in the shape of a cylinder. If the mass of the alloy is…

For the reaction 2N2O5(g) ® 4NO2(g) + O2(g), the following data were collected.   t (minutes) [N2O5] (mol/L)   0 1.24 x 10–2   10 0.92 x 10–2   20 0.68 x10–2   30 0.50 x 10–2   40 0.37 x 10–2   50 0.28 ´ 10–2   70 0.15 ´ 10–2         The initial rate of production of NO2 for this reaction is approximately:   A) 6.4 x10–4 mol/L • min   B) 3.2 x10–4 mol/L • min   C) 1.24 x 10–2 mol/L • min   D) 1.6 x 10–4 mol/L • min   E) none of these

Reaction 1 FeO(s) + CO(g) → Fe(1) + CO2(g) AG" > 0 Reaction 2: C(s) + CO2(g) → 2 CO(g) AGzn <0 Overall reaction: FeO(s) + C(s) → Fe(l) + CO(g) AG n < 0 Subm The chemical equations above represent the main reactions that occur during the production of Fe(l) under certain conditions. The overall reaction couples reactions 1 and 2, resulting in a < 0? thermodynamically favorable process. Which of the following best explains whether or not a particle diagram could represent how the coupling of reaction 1 and reaction 2 results in AG A particle diagram that represents the increase in the volume of gaseous product particles would be a good representation of how the coupling of reactions 1 and 2 results in a thermodynamically favorable process. A particle diagram that represents the decrease in the average kinetic energy of the particles would be a good representation of how the coupling of reactions 1 and 2 results in a thermodynamically favorable process. A particle diagram cannot represent…

Q A Z 8:13 AM Sat Mar 11 Status Exam @ 2 W S Final Exam X Consider this partial recipe for homemade granola to help answer the question. Yield: 6 Servings 4 cups rolled oats 1/3 cup honey 1/2 cup walnuts 1/2 cup raisins Copyright © 2003-2023 International Academy of Science. All Rights Reserved. 3 Limiting Reactants 19. E Granola D [a] R F % LO 5 T G 6 Y H ... & 7 N U Which material is the limiting ingredient if you have 12 cups of oats, 6 cups of honey, 1 cup of walnuts, 3 cups of raisins? A. raisins B. honey C. oats D. walnuts J * CO 8 M 9 K 0 Q. 1 100% 38

my other question may have gotten cut off

19. The chemical equation for photosynthesis is _CO2 (g) + _H₂O (1)→ __C6H1206 (s) + (C6H12O6 is glucose, the simplest sugar) a. Balance the chemical equation above by filling in the blanks. b. According to onetreeplanted.org, the average tree (across all climates and sizes) removes 10 kg of carbon dioxide from the atmosphere every year. Based on this, what mass of glucose is produced annually by the average tree? O2 (g) c. Teak is a common species of tropical tree. The graph below shows the amount of CO₂ absorbed by teak forests in tons of CO₂ per hectare of forest per year, according to the climate region where the forests are found (dry = low rainfall, humid=high rainfall). Looking at your photosynthesis equation again, what does this data suggest about which reactant is the limiting reactant for teak trees? Explain. C Teak Carbon sequestration rate (tons CO₂ ha -1yr -1) 10 10 20 Tropical humid Tropical dry Aboveground biomass, 0-20 years Belowground biomass, 0 -20 years

Your answer What type of chemical reaction is shown in the chemical equation below? 2 C5H5 + Fe → Fe(C5H5)2 Your answer Submit ver submit passwords through Google Forms. This form was created inside of Woodland Hills School District. Report Abuse

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help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working

In experiment #7, you observed the formation of carbon dioxide by reacting baking soda with vinegar.  Why was it not possible to relight the candle? A. Carbon dioxide is heavier than air so it stays in the beaker preventing the candle from relighting. B. Carbon dioxide is lighter than air so it escaped from the beaker and the candle should have relit. C. Carbon dioxide is heavier than air so it stays in the beaker and the candle should have relit. D. Carbon dioxide is lighter than air so it escaped from the beaker preventing the candle from relighting.

What I Can Do Directions: Use the words inside the box to correctly fill in the blanks. Write your answer on your answer sheet. catalyst dilute surface area concentration temperature collisions energy rate of reaction heat 1. A freshly exposed surface of metallic sodium tarnishes almost instantly if exposed to air and moisture, while iron will slowly turn to rust under the same conditions. In these two situations, the quickly or slowly reactants turn into products. 2. Adding the particles of the reactants to move more quickly, resulting in more refers to how will increase the rate of reaction because this causes collisions and more 3. Removing heat will lower the reactants to slow down, resulting in less frequent collisions. causing the particles of the 4. refers to how much solute is dissolved in a solution. If there is a greater concentration of reactant particles present, there is a greater chance that higher rate of reaction. among them will occur. More collisions mean a 5. A…

Review A Bookmark ole Concept S21 / 13 of 16 What mass of hydrogen sulfide, H2S, will completely react with 2.00 moles of silver nitrate, AGNO3? 2AGNO, +H2S –→ Ag,S +2HNO3 O A. 34.1 grams O B. 46.3 grams O C. 64.2 grams O D. 17.0 grams

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Use the information below to answer questions 1- 3. PCI,(g) 2 PCI;(g) + Cl2(8) PCI,(g) decomposes into PCI,(g) and Cl,(8) according to the equation above. A pure sample of PCI,(g) is placed in a rigid, evacuated 1.00 L container. The initial pressure of the PCI5(g) is 1.00 atm. The temperature is held constant until the PCI,(g) reaches equilibrium with its decomposition products. The figures below show the initial and equilibrium conditions of the system. PCI5 Potal = 1.00 atm PCI5, PCI3, and CI, Prstal = 1.40 atm Figure 1: Initial Figure 2: Equilibrium As the reaction progresses toward equilibrium, the rate of the forward reaction (A) increases until it becomes the same as the reverse reaction rate at equilibrium (B) stays constant before and after equilibrium is reached (C) decreases to become a constant nonzero rate at equilibrium (D) decreases to become zero at equilibrium If the decomposition reaction were to go to completion, the total pressure in the container would be (A) 1.4…

What is the missing particle in the reaction below? 27/13 Al +1/1 H → 27/14 Si + ?   A. e   B. n   C. He   D. H

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diagram b is correct,     What procedures can be used to solve this problem? write down the plan for this new way to solve the problem.  1. first execute plan 1 to solve this problem. explain in every step. 2. solve the problem again - this time use the plan that you propose, plan 2. 3. finally, think about the way that you can use it to make sure that your answer makes sense. write your assessment.

A student conducts an experiment of the combustion of ethane in the presence of oxygen. The graph below represents data collected in the lab. COMBUSTION OF ETHANE +ethane +02 - H20 120 100 80 60 40 20 10 15 20 -20 TIME Which line on the graph above would represent the limiting reactant and which line on the graph above would represent the excess reactant for the combustion of ethane? In your answer, cite specific evidence from the graph to support your determination. NUMBER OF MOLES