Lab 2 Alka-Seltzer Report

Please send me the question in 20 minutes it's very urgent plz

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

Hydrogen peroxide decomposes as shown below: 2 H2O2 → 2 H2O + O2 molar mass H2O2 = (34.0 g/mol)   A sample of hydrogen peroxide solution was analyzed using the procedure from the “Enzymatic Decomposition and Analysis of Hydrogen Peroxide” experiment. A 7.54 g sample of the solution generated 0.0277 mol of oxygen gas.   Calculate the mass percent of H2O2 in the solution.

Part 1 A student carried out an investigation to observe the effect of changing concentration of sulfuric acid on the breakdown of calcium carbonate (marble) chips. They changed the concentration of the acid between each test but kept the size of the marble chips constant. The full equation for the reaction and a graph of the overall results can be seen below. CaCO3(s) + H₂SO4(aq) → CaSO4(aq) + CO2(g) + H₂O (1) a) b) Rate of Reaction * Concentration of Acid (mol dm³) Explain, using collision theory, why the student obtained these results, and state what they could conclude about the effect of changing concentration of acid on the rate of reaction between calcium carbonate and sulfuric acid. If the student had ground up the calcium carbonate chips into a powder and run the tests again, what would you expect to happen to the rate of reaction? Briefly explain why by applying collision theory. Part 2 The student ran the same experiment, but this time changed the temperature, increasing it…

Please answer all!!

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. In the first step, calcium carbide and water react to form acetylene and calcium hydroxide: CaC₂(s) + 2 H₂O(g) → C₂H₂(g) + Ca(OH)₂(s) - In the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6C₂H₂(g) + 3 CO₂(g) + 4H₂O(g) → 5 CH₂CHCO₂(g) ΔΗ = 132. kJ Calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. Round your answer to the nearest kJ. KJ X Ś AH-414. kJ

None

18) In one of your experiments, you used a Grignard reaction to make a carboxylic acid. „Br 1) Mg 2) CO2 As part of this experiment, the following procedures were given: 1. When the Grignard reaction begins to slow down, place 10 g of crushed dry ice in a 150 mL beaker. Do not take time to weigh the dry ice. Use approximately the amount in the beaker indicated by your instructor. The CO2 is in large excess and will not affect your calculation of percent yield of benzoic acid product. Cover the beaker with a watch glass. 2. When most of the magnesium has reacted and the ether boiling subsides, quickly pour the contents of the tube into the beaker containing dry ice. 3. Add a few milliliters of ether to the test tube and swirl to rinse. Add the rinse liquid to the beaker. 4. Cover the beaker with the watch glass and allow it to stand until the next lab period. During the interim, the excess dry ice will have sublimed. 5. Hydrolyze the Grignard addition product by slowing adding 30 mL of…

1. Company vehicle records indicate that 140 g of sodium azide was placed in the air bag during production. How many moles of nitrogen gas will be produced by the rapid decomposition of the azide in the first reaction: 2NaN3 → 2Na +3N2? Show your work below.

2ICI(s) ** 12(s) + Cl2(g). Which of the following changes will increase the total amount of of Cl2 that can be produced? * O A. removing some of the 12(s) B. adding more ICI(s) O C. removing the Cl2 as it is formed D. decreasing the volume of the container

10. Lead (II) carbonate reacts with nitric acid to form lead (II) nitrate, water and carbon dioxide. 11. Hydrogen peroxide (H2O2) decomposes to produce liquid water and oxygen gas. 12. Magnesium chlorate decomposes to form magnesium chloride and oxygen gas. 13. Sodium sulfide reacts with nickel (II) nitrate to form nickel sulfide and sodium nitrate. 14. Aluminum, when hot enough, burns in air to form aluminum oxide. 15. Copper (I) oxide, heated in the presence of methane gas (CH4), produces pure copper metal and the gases carbon dioxide and water. 16. Solutions of sodium carbonate and iron (III) chloride react to form solid iron (III) carbonate and sodium chloride in solution.

The reaction between ammonia and nitrogen monoxide is given below:4 NH3(g) + 6 NO(g) 5 N2(g) + 6 H2O(l) We therefore know that which of the following reactions can also occur?  4 N2(g) + 3 H2O(g) 2 NH3(g) + 3 N2O(g) 2 NH3(g) + 3 N2O(g) 4 N2(g)  + 3 H2O(g) 2 N2O(g)     2 N2(g) + O2(g) None of the Above

11. Write the reaction for the combustion of propane gas (C3H8). If the reaction occurs in a closed vessel (no addition or removal of reactants or products) how could the reaction be shifted to reactants?

One of the many remarkable enzymes in the human body is carbonic anhydrase, which catalyzes the interconversion of carbonic acid with carbon dioxide and water. If it were not for this enzyme, the body could not rid itself rapidly enough of the CO₂2 accumulated by cell metabolism. The enzyme catalyzes the dehydration (release to air) of up to 10 CO₂ molecules per second. Part A Which component of this description corresponds to the term enzyme? Spell out the full name of the enzyme. Submit Part B Request Answer What is the chemical formula for the component of this description that corresponds to the term substrate? Express your answer as a chemical formula. °= | ΑΣΦ 4 Submit Request Answer Part C O A chemical reaction does not occur for this question. ? Which component of this description corresponds to the term turnover number? Express your answer using one significant figure. [Π| ΑΣΦ ? CO₂ molecules per second

The Haber-Bosch process is a very important industrial process. In the Haber-Bosch process, hydrogen gas reacts with nitrogen gas to produce ammonia according to the equation 3H₂(g) + N₂ (g)→2NH3(g) The ammonia produced in the Haber-Bosch process has a wide range of uses, from fertilizer to pharmaceuticals. However, the production of ammonia is difficult, resulting in lower yields than those predicted from the chemical equation. 1.04 g H₂ is allowed to react with 10.4 g N₂, producing 2.68 g NH3. Part A What is the theoretical yield in grams for this reaction under the given conditions? Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) μÅ Value Units ?

9. Furnaces in residential homes usually burn natural gas, which is mostly methane, CH. Here is the balanced equation for the complete combustion of methane: CH+20₂ → CO₂ + 2H₂O a. Explain why it is important to make sure your furnace is serviced and in proper working order before the winter. Be sure to include information about combustion reactions in your answer.