101 Ex4 ReportTemplate_2309

I need help with question 5? I am confused on question 5a and what it means?

To complete the lab report, please answer the following questions. 1. Another way of testing for pH is to use pH paper. The pH paper is coated with a chemical that changes colors when immersed into the sample being tested. The color of the paper is then compared against a color chart that shows the colors associated with the different pH values. State one disadvantage of using pH paper instead of a pH meter. Answer: 2. The pH scale is a logarithmic scale. This means that the difference between each pH unit is really a factor of ten (in terms of actual magnitude of the acidity or basicity of the substance). If the pH of grapefruit juice is 3 (pH = 3), and the pH of beer is 5 (pH = 5), how many times more acidic is grapefruit juice than beer? Answer:

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Please show solution and use laws for error calculation.

50 Experiment 6 Qualitative Analysis 2. Write the chemical formula for each of the following compounds: a) Iron (III) hydroxide b) Zinc sulfide c) Tin (II) perchlorate d) Cobalt (II) iodide e) Potassium nitrite f) Aluminum bromide g) Cobalt (III) carbonate h) Lead (IV) nitrate i) Ammonium oxalate

- logo H+ where H is the concentration of hydrogen ions The pH scale for acidity is defined by pH measured in moles per liter (M). %3D B10 A solution has a pH of 1.85. Calculate the concentration of hydrogen ions in moles per liter (M). The concentration of hydrogen ions is moles per liter. Question Help: D Video D Post to forum Submit Question Jump to Answer

Carla is using a fertilizer that contains nitric acid. How is nitric acid classified? strong acid weak acid strong base weak base Save and Exit Next Mark this and return ContentViewers/AssessmentViewer/Activit.

CHEMISTRY RATE WILL BE GIVEN! NO LONG EXPLANATION NEEDED.  PLEASE ANSWER 43-45

Needing help with the processing data

15 16 17 18 19 20 21 22 23 24 25 26 27 An aqueous solution at 25 °C has a OH concentration of 1. x 10 "M. Calculate the H,O' concentration. Be sure your answer has 1 significant digits. -10 M dh Submit Assignment Continue MacBook Air F12 F9 F10 888 O00 FB 30 F7 F5 F6 esc F4 F2 F3 F1 & @ # $ %3D 4 5 7 8 9 2 3

pH pH = 4.389 pH = 4.874 = pH = 5.339 pKa Answer Bank Using the equation to calculate the quotient [A]/[HA] at three different pH values. [A] [HA] + log [A-] [HA] [A] [HA] || = H = [A] [HA] 1 0.3273

CHEMISTRY RATE WILL BE GIVEN! NO LONG EXPLANATION NEEDED.  answer #43-45

I need help with one of my pre-lab questions which I want to understand. Its question number 2, the one that highlighted. I don't want to make it over-complicated, I want something that I can understand.

Unknown Acid Acid name Acetic acid Group #5 Group #6 Group #7 Mean Standard Deviation % Error STATISTICAL ANALYSIS: Calculate mean values for molar mass, pKa, and Ka. Calculate % error and standard deviation: Unknown acid # 1 Molar Mass of unknown acid (calculated), g/mol Group #1 Group #2 Group #3 Group #4 Reaction Initial conc. / M: Change in conc. at equilibrium / M: Equilibrium conc. / M: Acetic acid | Molar Mass, g/mol: 60.05 | pka = 4.76 Accepted Values Molar mass, g/mol 60.05 Ka = Part II 1. Using initial molarity of acid and measured pH of the acid before titration, build a RICE table and calculate the Ka of the acid. You can use examples 1, 2 (pp. 3-4) from the Manual (posted on Canvas) Initial Molarity of [HA], M 0.219 Initial pH of Acid pka = HA(aq) + H₂O(1) [HA] -X 58.8 57.4 60.4 61.0 58.4 59.2 59.7 59.3 1.13 0.01 [HA] + X 台 pH: H3O+ (aq) = 0 +X 2. Use the Henderson-Hasselbauch equation to perform the same calculation. +X pka 4.76 Ka = pka 4.78 5.00 4.64 4.89 4.62 4.68 4.82…

Question: Identify products A and B giving evidence from the student's observations and the data provided. *ive sent a picture

Please don't copy I am completing an online lab so I will try to provide the needed information to solve. Please let me know if any information is missing. We started with 20 mL 1 M acetic acid ~ 0.020 L acetic acid in a flask. (Ka acetic acid = 1.8x10^-5; pKa = 4.7) (Kb ammonia = 1.8x10^-5; pKb = 4.7; Ka = 5.56x10^-10; pKa = 9.25) We titrated with 1 M Ammonia have to calculate the pH mathematically at different amounts of Ammonia added. Our Ammonia amounts are 8 mL, 16 mL, 20 mL, and 22 mL. We then have to find the percent difference of the online labs pH calculations. Online Lab's Values: 8 mL Ammonia - pH of 4.58 16 mL Ammonia - pH of 5.36 20 mL Ammonia - pH of 6.99 (equivalence point in the lab) 22 mL Ammonia - pH of 8.24 I would greatly appreciate if you could show for all 4 of the amounts of Ammonia added, and show how you did them. Thank you! Will gladly upvote if work is shown!

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Data in first picture and questjons in second

search Remaining Time: 1 hour, 42 minutes, 08 seconds. * Question Completion Status: Moving to the next question prevents changes to this answer. Question 6 a noition Save Answer Consider the titration (titration of 10 ml lemon juice (citric acid) with 0.10 M NaOH) results obtained for four trials and the original juice has been diluted ten-fold (1+9 dilution) to obtain the diluted juice: Burette readings Trial Final ml Initial ml O E Moving to the next question prevents changes to this answer. 1 The amount (Molarity) of citric acid present in lemon juice will be: NB. Write the only value with 8.5 0 2 17.7 8.5 3 24.6 17.7 55255 4 31.3 24.6 (2) 4 Question 6 of 27 > 33°C Question 6 of 27 ▲) ENG 14:04 05/10/2022

Result/conclusion Using the image attached please write • molar mass, pKa, % error • Sources of error • Sequence followed Please please please answer as fast as possible

Sea X Assignments: ANATO X Gi 0220907135028396%20(1).pdf 2 CD Page view Human Anatomy X A Read aloud *20220907135028396 X TAdd text Draw 4 You prepare four solutions: Solution 1: Reactants + enzyme at #0 (about 100°F) and pH 7 Chemistry Check your recall lab. x V Highlight UNIT 2 65 3 Decompression sickness (also known as the bends) is a condition that affects divers and others operating under pressurized conditions. It occurs when gases such as nitrogen (N₂) come out of solution in the blood. This can lead to symptoms including joint pain, shortness of breath, and paralysis. Severe cases may result in death. a What type of molecule (ionic, polar covalent, nonpolar covalent) is nitrogen gas? b The liquid medium of blood is water. What type of compound (ionic, polar covalent, nonpolar covalent) is water? c What happens when molecules such as nitrogen gas mix with water? How does this explain the problems we see with decompression sickness?

I Part 2 Procedure, Data & Analysis: Recall: The amount of ionization or dissociation of ions determines the strength of an acid or base. The concentration of [H3O+], hydronium ion and [OH]. hydroxide ion, can be used to calculate pH and pOH as shown on the diagram here: Note: we use [H3O+] and [H*] interchangeably. 1. Click on Water Solution, Graph View, Probe Tool. Insert the probe in the water. Notice that given before 2. Fill in the hydronium the the pH. 3. Use the the pOH. Equilibrium Concentration (mol/L) 10² 10¹ 10⁰ 10¹ 10 10ª 104 10% 10⁰ 107 10⁰ pH: 7.00 2 H₂O H3O+ + OH- H 1L 4 [H₂O*] or [H*] pH (OH)-1x10¹4 H (H)-1x10-¹4 -LOUISE POH-14-PH pH-14-POH Show work: [OH] LIO - امي the initial concentration of the solution is any ionization or dissociation takes place. 4. Did your answer to # 2 match the pH given in the simulation? 5. Is the answer to #3 equal to: (14 - pH)? 6. Is the solution an acid, a base or neutral, based upon the calculated pH? Attach notebook paper to show…

Calculate the concentration of HDlus if the pH = 4.12. %3D Report your answer in standard form not using scientific notion. Your Answer:

Using the image attached please please write a paragraph for the objective clearly stated Also write another paragraph explaining the analysis Please please please answer super super fast it’s super important Please try to answer

With the attached data, how do I calculate the mass percent of vinegar?

please make sure correct sig figs!!! Please do it neat and clean correctly... posting third time Please do it right please

Please put the data in tabular format please Please please please answer as fast as possible

Write the balanced equation for the neutralization of acid rain (assume HNO3 is dissolved in water) by limestone (calcium carbonate). Express your answer as a chemical equation. ΑΣφ ? DA chemical reaction does not occur for this question. Submit Request Answer Provide Feedback 76 tv

Which of the following should NOT be done in case of a large acid spill? A After wiping the spill with a tissue, throw it in the Solid Waste Container B Inform your laboratory instructor Wipe it directly with a tissue D Neutralize it with a base, such as sodium carbonate, before wiping it.