Solution and explanation for Percentage Yield and Theoritical Yield for this data (Synthesis of Aspirin) Salicylic acid - 1.950 g Labeled watch glass - 50.664 g Labeled watch glass & piece of filter paper together - 50.872 g filter paper only - 0.208 g Where the data is from: https://youtu.be/tLXljLxRZ0U Room temperature - filter paper, watch glass and aspirin - 53.088 g

Constants Periodic Table Consider the following reaction: If the initial volume of the H2O2 solution is 3.2 L, what total amount of O2 (in moles) is formed in the first 20 s of reaction? Hint: Use Figure 1 to answer this problem. H2O2(aq) H20() + ½ O2(g) and the kinetics plots below to answer the questions to the right. Express your answer in moles to two significant figures. O 1.4 mol Figure 1. Plot of [H,O,] vs time O .8 mol 0.9 0.63 mol 0.8 0.7 O 0.70 mol 0.6 0.5 0.4 Submit Request Answer 0.3 0.2 0.1 Part B 20 40 60 80 time (s) concentration of H;O2 (mol L²)

<- YouTube Maps Netflix in other Co... Nhttps://lms.naz.ed... TO S Question #7 Chelsea the Chemist needs to make 300.0 mL of 2.50 M HNO3 solution. She has 15.0 M (concentrated) HNO3 solution available. Select the correct choices from the drop-down menus to describe how she should make this solution. Combine く of 15.0 M HNO3 with to make 300.0 mL of 2.50 M HNO3 solution. く distilled water Question #8 An ammonium nitrate (NH4NO3) solution is 50.0% NH4NO3 by mass and has a density of 1.22 g/mL at 25°C. What is the molarity of this NH4NO3 solution? (Round your answer to 3 significant figures.) M Question #9 23 98,358 19 JUN 17 2 14 tv♫ NAO X W

+ I| P. * C0 ** w/ Table 3. Heat of neutralization data and calculations Table view List view Sample 1 [1] Volume of HCI (mL) Sample 2 (2) Temperature of HCI (mL) 6'6 24.0 [3] Volume of NAOH (mL) 24.2 49.8 [4] Temperature of mixture after reaction ("C) 6'6 31.0 Temperature difference (*C) 6'08 [5] Number of calories evolved (cal) enter a positive value (6] Moles of H* that were (jow) pazijennau [7] Calories evolved per mole of (jou/je) „H (2pts) Average of the two trials of calories evolved per mole of H (7pts) Part B. Enthalpy of Solution of Salts Table 4 Enthalny of solution of salts data andcalculations MacBook Air 08 DO #3 3 F8 24 2. % OL1 4. * 5. 9. 8 7. R. dele D. F. C. W command puDwwoɔ option

*** CALULATE FINL CONCENTRATION USING 2 IG FIGS AND APPROPRIATE UNITS A 6.0 mLmsample of a 50.0 % (mm/vv) acetic acid (HC2H3O2) solution is added to water to give a final volume of 34 mL.

Help Discussions List > View Topic * Settings Solution_Chemistry CH.8 Unlocked: Monday, February 8, 2021 12:00 AM CST - Friday, February 12, 2021 11:30 PM CST. Must post iise. * Subscribe 1. If you have a solid solute dissolving in a liquid solvent: a) Name the 3 things that will increase the RATE of solution formation. b) What are the 2 things you change for the reaction conditions if the solute was a gas to increase the solubility? 2a. Calculate the %(m/m) of 86.9g KBr dissolved in 550. g H20. 2b. Calculate the %(m/m) be if the KBr was dissolved to make a 550.g solution instead? 3a. What is the Molarity of a solution made by dissolving 7.65g Ca(OH)2 in 750.mL solution: 3b. In addition, what is the Osmolarity of this solution? Start a New Thread Sort by: Filter by: All Threads v Most Recent Activity You must start a thread before you can read and reply to other threads

Reactions of Na₂CO3 * Reactions with a carbonate salt and acid are gas evolving! I Na₂CO3(aq) Na* CO3²- Na2CO3(aq) Na₂CO3 (aq) Na₂CO3(aq) Na₂CO3 (aq) Na₂CO3 (aq) Na2CO3 (aq) Na₂CO3 (aq) Na₂CO3 (aq) Na₂CO3 (aq) + + + + 2 Pb(NO3)2 (aq) H* CI HCl (aq) Na3PO4 (aq) KI (aq) CuSO4 (aq) H₂SO4 (aq) NaOH (aq) AgNO3(aq) CaCl2 (aq) HNO3(aq) →>> →> →>>> ➜>> ↑ ↑ Na Cl + H* CO3²- NaCl (aq) + [H₂CO3 (aq)] → NaCl (aq) + H₂O (1) + CO2 (s) 2 NaCl (aq) + H2₂O (1) + PAGE 123 OF 232 (g)

Help

A stock solution of Na2B having a concentration of 0.1486 M is used to prepare four calibration standards, A-D in the table below, by diluting the indicated volume of this solution to a total volume of 50.00 mL. Complete the table by entering the molarity of B2- for each standard solution. Show an illustrative calculation for tube ‘A’. Use the dilution formula and express each result to one more digit than allowed by applying the rules of significant figures.

Hydrogen peroxide solutions typically are sold at concentrations of 5.00%(v/v) with water as the only other ingredient. If one 271 mL bottle is purchased, then how many moles of water does this contain? (Assume a water density of 1.00 g mL-1) Type your numeric answer and submit